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Arcturus

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There have been suggestions that Arcturus might be a member of a binary system with a faint, cool companion, but no companion has been directly detected. In the absence of a binary companion, the mass of Arcturus cannot be measured directly, but models suggest it is slightly greater than that of the
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Arcturus is moving rapidly (122 km/s or 270,000 mph) relative to the Sun, and is now almost at its closest point to the Sun. Closest approach will happen in about 4,000 years, when the star will be a few hundredths of a light-year closer to Earth than it is today. (In antiquity, Arcturus
1436:. However, all three stars surveyed showed similar oscillations yielding similar companion masses, and the authors concluded that the variation was likely to be intrinsic to the star rather than due to the gravitational effect of a companion. So far no substellar companion has been confirmed. 3327:
Kallinger, T.; Weiss, W. W.; Barban, C.; Baudin, F.; Cameron, C.; Carrier, F.; De Ridder, J.; Goupil, M.-J.; Gruberbauer, M.; Hatzes, A.; Hekker, S.; Samadi, R.; Deleuil, M. (2010). "Oscillating red giants in the CoRoT exofield: Asteroseismic mass and radius determination".
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who had been transformed into a bear. Zeus averted their imminent tragic fate by transforming the boy into the constellation Boötes, called Arctophylax "bear guardian" by the Greeks, and his mother into Ursa Major (Greek: Arctos "the bear"). The account is given in
1555:, circa 700 BC, as well as Hipparchus's and Ptolemy's star catalogs. The folk-etymology connecting the star name with the bears (Greek: ἄρκτος, arktos) was probably invented much later. It fell out of use in favour of Arabic names until it was revived in the 1274:. It is frequently assigned the spectral type of K0III, but in 1989 was used as the spectral standard for type K1.5III Fe−0.5, with the suffix notation indicating a mild underabundance of iron compared to typical stars of its type. As the brightest K-type 1301:
in the visible range and molecular absorption lines in the infrared. This is due to the optical depth of the atmosphere varying with wavelength. The spectrum shows very strong absorption in some molecular lines that are not produced in the
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and Sirius, one of the most luminous stars in the Sun's neighborhood. It is about 110 times brighter than the Sun in visible light wavelengths, but this underestimates its strength as much of the light it gives off is in the
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Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Robinson, P. E. (2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I".
1413:, with the companion about twenty times dimmer than the primary and orbiting close enough to be at the very limits of humans' current ability to make it out. Recent results remain inconclusive, but do support the marginal 1506:, who gave the gift of wine to other men, but was murdered by them, because they had had no experience with intoxication and mistook the wine for poison. It is stated that Icarius became Arcturus while his dog, 2858:
Abia, C.; Palmerini, S.; Busso, M.; Cristallo, S. (2012). "Carbon and oxygen isotopic ratios in Arcturus and Aldebaran. Constraining the parameters for non-convective mixing on the red giant branch".
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At the height of the American Civil War, President Abraham Lincoln observed Arcturus through a 9.6-inch refractor telescope when he visited the Naval Observatory in Washington, DC, in August, 1863.
1657:(Devanagari स्वाति, Transliteration IAST svāti, svātī́), possibly 'su' + 'ati' ("great goer", in reference to its remoteness) meaning very beneficent. It has been referred to as "the real pearl" in 1353:. Belmonte and colleagues carried out a radial velocity (Doppler shift of spectral lines) study of the star in April and May 1988, which showed variability with a frequency of the order of a few 878:(WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN, which included 2067: 1420:
In 1993, radial velocity measurements of Aldebaran, Arcturus and Pollux showed that Arcturus exhibited a long-period radial velocity oscillation, which could be interpreted as a
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Ohnaka, K.; Morales Marín, C. A. L. (November 2018). "Spatially resolving the thermally inhomogeneous outer atmosphere of the red giant Arcturus in the 2.3 μm CO lines".
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at which Arcturus would appear directly overhead in the summer night sky. Knowing they had arrived at the exact latitude of the island chain, they sailed due west on the
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Isidoro-García, L.; et al. (January 2022), "Theoretical lifetimes and Stark broadening parameters for visible-infrared spectral lines of V I in Arcturus",
1768:(a food item) in spring. The beginning of summer was marked by the star's setting with the Sun in the west and the disappearance of the larvae. The people of 930:, whose components are each fainter than Arcturus. This makes Arcturus the third-brightest individual star, just ahead of α Centauri A (officially named 2911:
Lagarde, N.; et al. (August 2015). "Models of red giants in the CoRoT asteroseismology fields combining asteroseismic and spectroscopic constraints".
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is 0.54 milliarcseconds, translating to a distance margin of error of ±0.23 light-years (0.069 parsecs). Because of its proximity, Arcturus has a high
698: 650: 4054: 2001:, the star's celestial activity was supposed to portend tempestuous weather, and a personification of the star acts as narrator of the prologue to 2768: 502: 658: 1200:
Arcturus is estimated to be around 6 to 8.5 billion years old, but there is some uncertainty about its evolutionary status. Based upon the
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Carney, Bruce W.; et al. (March 2008). "Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars".
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Schröder, K.-P.; Cuntz, M. (April 2007). "A critical test of empirical mass loss formulas applied to individual giants and supergiants".
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observed Arcturus in the daytime with a telescope in 1635. This was the first recorded full daylight viewing for any star other than the
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at its brightest from Earth, whereas an observer on the former system would find Arcturus with a magnitude -5.0, slightly brighter than
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Pavlenko, Ya. V. (September 2008). "The carbon abundance and C/C isotopic ratio in the atmosphere of Arcturus from 2.3 µm CO bands".
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of c. 5 μHz. They suggested that the most plausible explanation for the variability of Arcturus is stellar oscillations.
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at midnight on 27 April, and at 9 p.m. on June 10 being visible during the late northern spring or the southern autumn. From the
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Turner, Nils H.; et al. (May 1999), "Adaptive Optics Observations of Arcturus using the Mount Wilson 100 Inch Telescope",
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Tarrant, N. J.; et al. (November 2007), "Asteroseismology of red giants: photometric observations of Arcturus by SMEI",
4258: 3867: 3770: 3742: 3587: 2684: 2638: 1177:. The star, given its evolutionary state, is expected to have undergone significant mass loss in the past. The star displays 3763:
Aboriginal mythology : an A-Z spanning the history of aboriginal mythology from the earliest legends to the present day
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Cohen, Martin; et al. (June 2005), "Far-Infrared and Millimeter Continuum Studies of K Giants: α Bootis and α Tauri",
1559:. Arcturus is also mentioned in Plato's "Laws" (844e) as a herald for the season of vintage, specifically figs and grapes. 4300: 3276:
Belmonte, J. A.; Jones, A. R.; Palle, P. L.; Roca Cortes, T. (1990). "Acoustic oscillations in the K2 III star Arcturus".
939: 5092: 1864:("a pillar to stand by"), was one of the ten "pillars of the sky", bright stars that represented the ten heavens of the 1835:
of Hawaii. For a return trip to Tahiti the navigators could use Sirius, the zenith star of that island. Since 1976, the
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As one of the brightest stars in the sky, Arcturus has been the subject of a number of studies in the emerging field of
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Die keltischen Wurzeln der Artussage: mit einer vollständigen Übersetzung der ältesten Artuserzählung Culhwch und Olwen
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Davis Jr., G. A. (October 3, 1944). "The Pronunciations, Derivations, and Meanings of a Selected List of Star Names".
2015: 1776:
saw Arcturus and Muphrid as man and woman, and took the appearance of Arcturus at sunrise as a sign to go and harvest
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lines show the molecular component of the atmosphere extending outward to 2–3 times the radius of the star, with the
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Gray, David F.; Brown, Kevin I. T. (August 2006), "The Rotation of Arcturus and Active Longitudes on Giant Stars",
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Hamacher, Duane W.; Frew, David J. (2010). "An Aboriginal Australian Record of the Great Eruption of Eta Carinae".
2777: 2370: 2033:" assumes that it is derived from "Arcturus" and that the late 5th to early 6th-century figure on whom the myth of 871: 634: 4669:
Brown, Kevin I. T. (February 2007), "Long-Term Spectroscopic and Precise Radial Velocity Monitoring of Arcturus",
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Verhoelst, T.; Bordé, P. J.; Perrin, G.; Decin, L.; et al. (2005). "Is Arcturus a well-understood K giant?".
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Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".
2081:. The star was chosen as it was thought that light from Arcturus had started its journey at about the time of the 6517: 4117: 2082: 875: 76: 2228:
Ramírez, I.; Allende Prieto, C. (December 2011). "Fundamental Parameters and Chemical Composition of Arcturus".
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Lacour, S.; et al. (July 2008), "The limb-darkened Arcturus: imaging with the IOTA/IONIC interferometer",
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Harper, Graham M.; et al. (June 2022), "The Wind Temperature and Mass-loss Rate of Arcturus (K1.5 III)",
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Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars".
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and be located roughly at the same orbital distance from Arcturus as the Earth is from the Sun, at 1.1 
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to landfall. If Hōkūleʻa could be kept directly overhead, they landed on the southeastern shores of the
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Hinkle, K.; Wallace, L. (2005). "The Spectrum of Arcturus from the Infrared through the Ultraviolet".
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with a duration that is probably less than 14 years. A weak magnetic field has been detected in the
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Rogers, John H. (1998). "Origins of the Ancient Constellations: II. The Mediterranean Traditions".
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Asteroseismological measurements allow direct calculation of the mass and radius, giving values of
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Ryde, N.; et al. (November 2002), "Detection of Water Vapor in the Photosphere of Arcturus",
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Navarro, Julio F.; et al. (January 2004), "The Extragalactic Origin of the Arcturus Group",
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Rogers, John H. (1998). "Origins of the Ancient Constellations: I. The Mesopotamian Traditions".
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Quirrenbach, A.; et al. (August 1996), "Angular diameter and limb darkening of Arcturus.",
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Küker, M.; Rüdiger, G. (January 2011), "Differential rotation and meridional flow of Arcturus",
2327:"Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity" 1514:), although "Arcturus" here may be used in the sense of the constellation rather than the star. 6512: 6487: 5561: 4581:
Brown, Kevin I. T.; et al. (June 2008), "Long-Term Spectroscopic Monitoring of Arcturus",
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Wood, M. P.; et al. (February 2018), "Vanadium Transitions in the Spectrum of Arcturus",
679: 5895: 5291: 4208: 3890: 3479: 2966:"First detection of a weak magnetic field on the giant Arcturus: remnants of a solar dynamo?" 1796: 1697: 1394:. This form of modelling is still relatively inaccurate, but a useful check on other models. 1145: 1129: 1122: 859: 763: 703: 628: 623: 510: 5047: 4557: 4422: 3404: 3351: 3289: 3246: 3193: 2981: 2934: 2881: 2479: 2137: 6547: 5043: 5022: 4983: 4944: 4935:
Griffin, R. E. M.; Lynas-Gray, A. E. (June 1999), "The Effective Temperature of Arcturus",
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Tsuji, T. (2009). "The K giant star Arcturus: The hybrid nature of its infrared spectrum".
3152: 3122: 3083: 3027: 2977: 2930: 2877: 2822: 2781: 2710: 2672: 2475: 2416: 2338: 2299: 2253: 2187: 2133: 1811:. Using Hōkūleʻa and other stars, the Polynesians launched their double-hulled canoes from 1467: 1444: 1358: 1197:. The magnetic activity appears to lie along four latitudes and is rotationally modulated. 1090: 997: 774: 352: 2608: 1457: 8: 2735: 2668: 2078: 2045: 1962: 966: 693: 642: 5026: 4987: 4948: 4911: 4864: 4841:
Retter, Alon; et al. (July 2003), "Oscillations in Arcturus from WIRE Photometry",
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A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations
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Kushniruk, Iryna; Bensby, Thomas (November 2019), "Disentangling the Arcturus stream",
4356: 4026: 3821: 3795: 3416: 3390: 3363: 3337: 3309: 3258: 3232: 3205: 3179: 3099: 3073: 3043: 3017: 2946: 2920: 2893: 2867: 2840: 2812: 2491: 2465: 2432: 2406: 2269: 2243: 2149: 2123: 2018:, compiled at the end of the 4th century or beginning of the 5th century, names one of 1503: 1338: 1240: 1109: 981:, "Arc to Arcturus, then spike (or speed on) to Spica". Together with the bright stars 373: 200: 161: 6507: 6422: 5078: 3817: 3275: 2428: 2351: 2326: 2325:
Massarotti, Alessandro; Latham, David W.; Stefanik, Robert P.; Fogel, Jeffrey (2008).
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In ancient Greek, the star is found in ancient astronomical literature, e.g. Hesiod's
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has crossed the Pacific Ocean many times under navigators who have incorporated this
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The Brightest Stars: Discovering the Universe Through the Sky's Most Brilliant Stars
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on his return to Hawaii from the South Pacific Ocean. The Hawaiians called Arcturus
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van Leeuwen, Florian (November 2007). "Validation of the new Hipparcos reduction".
1808: 1673: 1650: 1619: 1350: 1261: 1205: 1058: 546: 470: 336: 183: 103: 5211: 4565: 4430: 3359: 3254: 3201: 2990: 2965: 2942: 2889: 1841: 1764:(Muphrid). Its appearance in the north signified the arrival of the larvae of the 1275: 1033:
distant from Arcturus, and would have a visual magnitude −2.5, about as bright as
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and will continue to do so until it accumulates a large enough degenerate helium
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said that the star Arcturus lay below the belt of Arctophylax, and according to
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Arcturus had several other names that described its significance to indigenous
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Sun. Evolutionary matching to the observed physical parameters gives a mass of
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in 1893 (at 36.7 light-years away, the light actually started in 1896).
1978: 1876:, meaning "stars of the frigatebird". This constellation marked the path for 1507: 1318: 1294: 1244: 1231: 1125:) power output is about 180 times that of the Sun. With a near-infrared 1101:, and appears to be moving with a group of 52 other such stars, known as the 1098: 1097:
was closer to the centre of the constellation.) Arcturus is thought to be an
1082: 1026: 1016: 1005: 832: 808: 727: 285: 84: 6154: 5276: 5271: 5266: 5256: 5246: 5226: 5221: 5182: 1877: 1015:("slightly red"): it has a B-V color index of +1.23, roughly midway between 923: 6459: 6275: 6270: 6250: 5864: 5527: 4526: 2402: 1998: 1603: 1567: 1537:, and also known as Shudun, "yoke", or SHU-PA of unknown derivation in the 1385: 1311: 1213: 1209: 1194: 867: 816: 797: 759: 450: 409: 6149: 5517: 5512: 5487: 5482: 5477: 5472: 5439: 5434: 5429: 5424: 5419: 5414: 5409: 5404: 5399: 5394: 5389: 5384: 5379: 5374: 5369: 5364: 5359: 5354: 5349: 5344: 5339: 5334: 5329: 5241: 5231: 5216: 5070: 6382: 6280: 6195: 5836: 5831: 5826: 5816: 4902: 4855: 4808: 4761: 3652: 3395: 3078: 2470: 2041: 2034: 1951: 1893: 1828: 1773: 1556: 1530: 1462:
One astronomical tradition associates Arcturus with the mythology around
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in the sky, Arcturus has been significant to observers since antiquity.
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K1.5III—an aging star around 7.1 billion years old that has used up its
6402: 6377: 6346: 6190: 5745: 5497: 3484:. Hard, Robin (transl.). Oxford University Press. pp. 5–7, 35–37. 3481:
Eratosthenes and Hyginus: Constellation Myths, with Aratus's Phaenomena
3297: 2736:"Follow the arc to Arcturus, and drive a spike to Spica | EarthSky.org" 1846: 1406: 1354: 1133: 1070: 1030: 1001: 970: 812: 781: 463: 423: 359: 256: 4030: 1722:'horn star'). Later it became a part of another constellation 1224:
phase. However, Charbonnel et al. (1998) placed it slightly above the
950:. Arcturus has been seen at or just before sunset with the naked eye. 6397: 6392: 6215: 5808: 5724: 5719: 5714: 5709: 5704: 5699: 5694: 5689: 5684: 5679: 5674: 5669: 5664: 5659: 5654: 5649: 5644: 5639: 5634: 5629: 5624: 5619: 5614: 5609: 5604: 5599: 5594: 5589: 5584: 5579: 5574: 5569: 5551: 5546: 5541: 5507: 5502: 5492: 4186:(in Italian). Translated by Faccia, M. Edizioni Arkeios. p. 74. 4163:
Zimmer, Stefan (March 2009). "The Name of Arthur – A New Etymology".
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Cosmic Abundances as Records of Stellar Evolution and Nucleosynthesis
1853: 1781: 1402: 1221: 1167: 1137: 1066: 1049: 1020: 947: 789: 743: 28: 1982: 1977:: Գութանի աստղ; lit. star of the plow) was in fact Arcturus, as the 895: 819:(around 35 million kilometers) and is around 170 times as luminous. 731: 89: 6387: 6315: 6310: 6305: 6300: 6128: 6123: 6118: 6113: 6108: 6103: 6098: 6093: 6088: 6083: 6078: 6073: 6068: 6063: 6058: 6053: 6048: 6043: 6038: 6033: 6028: 6023: 6018: 6013: 6008: 6003: 5998: 5993: 5988: 5983: 5978: 5973: 5968: 5963: 5958: 5953: 5948: 5943: 5938: 5933: 5928: 5923: 5918: 5913: 5908: 5903: 5872: 5846: 5821: 5760: 5033: 4996: 4957: 4919: 4872: 4825: 4778: 4730: 4691: 4603: 4460: 4413: 4022: 3526: 3477: 3463: 3436: 3237: 3095: 2925: 2311: 2061: 2053: 1885: 1824: 1765: 1545: 1287: 1217: 1118: 990: 800: 599: 4634: 4548: 4509: 3800: 3342: 3184: 3022: 2872: 2817: 2411: 2248: 2128: 1594:
has appeared in Al Achsasi Al Mouakket catalogue (translated into
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and was the star that ruled the month approximating January. The
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Arcturus's light was employed in the mechanism used to open the
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An alternative lore associates the name with the legend around
1484: 1322: 1074: 915: 673: 524: 436: 364: 3850:. Darlington, New South Wales: University of Sydney. pp.  1562: 118: 3737:. Mineola, New York: Dover Publications Inc. pp. 77–78. 3119:
A photometric atlas of the spectrum of Arcturus, λλ3600-8825Å
2910: 2324: 1900:. The Hawaiian name for Arcturus as a single star was likely 1745: 1654: 1595: 1583: 1534: 1463: 1038: 982: 978: 954: 5013:
Griffin, R. F. (October 1998), "Arcturus as a double star",
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The Publications of the Astronomical Society of the Pacific
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The Publications of the Astronomical Society of the Pacific
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The Publications of the Astronomical Society of the Pacific
2857: 1330: 1113: 926:(combined magnitude of −0.27). However, α Centauri AB is a 890: 720: 328: 308: 121: 115: 6454: 4622:
Monthly Notices of the Royal Astronomical Society: Letters
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The Morning Star Rises: an account of Polynesian astronomy
3437:"Long-period radial velocity variations in three K giants" 3326: 1904:, which means "star of gladness", or "clear star". In the 4973: 3380: 3216: 1924:, a variant of the Marquesan name and a name shared with 1236: 943: 785: 2585:"Bulletin of the IAU Working Group on Star Names, No. 1" 1314:
steeply accelerating to 35–40 km/s in this region.
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The British sources of the abduction and Grail romances
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Ramya, P.; Reddy, Bacham E.; Lambert, David L. (2012).
1819:. Traveling east and north they eventually crossed the 894:
Arcturus is the brightest star in the constellation of
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One of the possible etymologies offered for the name "
1989:: Եզող; lit. the person who is plowing) by Armenians. 1053:
Optical image of Arcturus (DSS2 / MAST / STScI / NASA)
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Astronomers term "metals" those elements with higher
906:
of −0.05, Arcturus is the brightest star in the
124: 109: 2963: 2390: 993:, depending on the source), Arcturus is part of the 4793: 4746: 4091: 4089: 3222: 112: 6368: 3843: 2904: 2198: 1748:people of southeastern Australia knew Arcturus as 1606:in the past, leading to obsolete variants such as 1325:. The atmosphere of Arcturus has an enrichment of 4934: 4580: 4370:Monthly Notices of the Royal Astronomical Society 4115: 3609:Monthly Notices of the Royal Astronomical Society 2805:Monthly Notices of the Royal Astronomical Society 2798: 1466:, who was about to shoot and kill his own mother 957:'s hemispheres as it is located 19° north of the 64:Arcturus in the constellation of Boötes (circled) 6479: 4086: 3761:Nyoongah, Mudrooroo; Narogin, Mudrooroo (1994). 2107: 2105: 2103: 2101: 1965:theorized that the star commonly referred to in 1278:in the sky, it has been the subject of multiple 1041:as seen from Earth, but with an orangish color. 4398: 4275:"The opening ceremony of A Century of Progress" 4213:. University Press of America. pp. 38–39. 4009:Hagar, Stansbury (1900). "The Celestial Bear". 3846:Night skies of aboriginal Australia: a noctuary 3760: 3541:Journal of the British Astronomical Association 3003: 3001: 2769:Journal of the British Astronomical Association 2633:. New York City: Copernicus Books. p. 21. 6337: 4281:. University of Illinois-Chicago. January 2008 3788:Journal of Astronomical History & Heritage 3565: 3138: 3136: 3121:. Cambridge: Cambridge Philosophical Society. 3116: 2964:Sennhauser, C.; Berdyugina, S. V. (May 2011). 2957: 2364: 2362: 1849:technique in their non-instrument navigation. 1293:The spectrum shows a dramatic transition from 5086: 4142:(in German). Universitätsverlag. p. 37. 3434: 3374: 3142: 2449: 2386: 2384: 2318: 2098: 1788:of northern New South Wales knew Arcturus as 1166:, while the oxygen isotope ratio for a first 27:"α Boötis" redirects here. For A Boötis, see 5863: 4494: 3785: 3471: 3269: 2998: 2761: 2759: 2757: 2289: 2037:is based was originally named for the star. 1397: 977:). By continuing in this path, one can find 5100: 4448:The Astrophysical Journal Supplement Series 4279:Century of Progress World's Fair, 1933-1934 4248: 4109: 4096:Lewis, Charlton T.; Short, Charles (1879). 4043: 4037: 3837: 3835: 3689:Wehr, Hans (1994). Cowan, J. Milton (ed.). 3133: 3110: 2622: 2443: 2359: 2292:The Astrophysical Journal Supplement Series 2180:CDS/ADC Collection of Electronic Catalogues 2111: 1717: 1691: 1590:"the uplifted one of the lancer". The term 1306:but in a surrounding shell. Examination of 1204:of Arcturus, it is currently ascending the 1044: 5093: 5079: 4116:Alan Roberts, Peter; Yeshi, Tulku (2013). 4095: 3779: 3682: 3637: 3596: 3532: 2381: 1586:). Arcturus is specified as السماك الرامح 938:. The French mathematician and astronomer 16:Brightest star in the constellation Boötes 5807: 4995: 4956: 4901: 4854: 4807: 4760: 4729: 4707: 4690: 4651: 4633: 4602: 4547: 4508: 4477: 4459: 4412: 4389: 4350: 4242: 4106:Available on the Perseus Digital Library. 4002: 3799: 3703: 3697: 3628: 3559: 3462: 3394: 3341: 3320: 3236: 3183: 3163: 3077: 3021: 2989: 2924: 2871: 2834: 2816: 2754: 2658: 2656: 2654: 2652: 2650: 2469: 2410: 2350: 2285: 2283: 2247: 2127: 620:α Boötis, Alpha Boo, α Boo 75:J2000       4233: 4171:(1). University of Wales Press: 131–136. 4047:Ancient Armenian Religions (in Armenian) 3971: 3959: 3947: 3935: 3923: 3911: 3882: 3876: 3832: 3529:, pp. 38–40, p. 182 (note to p. 40) 3007: 2728: 2558: 2533: 2508: 2368: 2173: 2171: 2169: 2167: 2165: 2163: 1561: 1517: 1443: 1230: 1048: 889: 155:+19° 10′ 56″ 5012: 4298: 4267: 4206: 4072: 3841: 3498: 3435:Hatzes, A.; Cochran, W. (August 1993). 3428: 2702: 2601: 1220:from its core and is now in its active 292: 6480: 4181: 4162: 4137: 3756: 3754: 3730: 3602: 3538: 3478:Eratosthenes; Hyginus; Aratus (2015). 2765: 2662: 2647: 2559:Liddell, Henry George; Scott, Robert. 2534:Liddell, Henry George; Scott, Robert. 2509:Liddell, Henry George; Scott, Robert. 2280: 2177: 1961:Early-20th-century Armenian scientist 1578:, Arcturus is one of two stars called 5074: 4668: 4249:Tyson, Donald; Freake, James (1993). 4008: 3977: 3691:A dictionary of modern written Arabic 3673: 3667: 3645:"List of the 25 brightest stars" 3169: 2792: 2628: 2577: 2160: 1992: 1803:, the "Star of Joy". Arcturus is the 1112:of −0.30, Arcturus is, together with 3765:. London: HarperCollins. p. 5. 3734:Star Lore: Myths, Legends, and Facts 3688: 3566:Kunitzsch, Paul; Smart, Tim (2006). 3117:Griffin, R. E.; Griffin, R. (1968). 3054: 2851: 2711:"Arc to Arcturus, Speed on to Spica" 750:. The name Arcturus originated from 704:Bright Star Catalogue (5th rev. ed.) 4238:. Speculum Historiale. p. 170. 4234:Chambers, Edmund Kerchever (1964). 4138:Zimmer, Stefan (February 1, 2006). 4078: 3751: 3504: 2708: 1872:, the pattern of Boötes was called 1862:Ana-tahua-taata-metua-te-tupu-mavae 1458:Boötes § History and mythology 770:. Arcturus forms one corner of the 312: 13: 4321: 4082:. "Rudens". p. prol. 71. 2375:The Hipparcos and Tycho Catalogues 1954:of eastern Canada saw Arcturus as 1935:, Arcturus is called the Old Man ( 1582:"the uplifted ones" (the other is 1428:would be nearly 12 times the 14: 6559: 5056: 3883:Makemson, Maud Worcester (1941). 3818:10.3724/SP.J.1440-2807.2010.03.06 1417:detection of a binary companion. 1193:with a strength of around half a 953:Arcturus is visible from both of 918:(−1.46 apparent magnitude), 780:Located relatively close at 36.7 6465: 6453: 6441: 6418: 6417: 4653:10.1111/j.1745-3933.2007.00387.x 4251:Three Books of Occult Philosophy 4011:The Journal of American Folklore 3674:Allen, Richard Hinckley (1936). 2836:10.1111/j.1365-2966.2012.21677.x 2778:British Astronomical Association 2065: 1333:but only about a third of solar 872:International Astronomical Union 102: 53: 46: 4299:Talcott, Rich (July 14, 2014). 4292: 4227: 4200: 4175: 4156: 4131: 4060:from the original on 2022-10-09 3724: 3520: 2693: 2552: 2527: 1908:, Arcturus was probably called 1628:(1391). Another Arabic name is 1344: 1185:structures, and it undergoes a 822: 815:, but has expanded to 25 times 246: 6533:Henry Draper Catalogue objects 6498:Hypothetical planetary systems 3731:Olcott, William Tyler (2004). 3649:Jordanian Astronomical Society 3278:Astrophysics and Space Science 2502: 2369:Perryman; et al. (1997). 1760:) and another star in Boötes, 1734: 1712: 1686: 1653:, Arcturus is called Swati or 1216:. It has likely exhausted the 1170:star gives a mass of 1.2  1011:Ptolemy described Arcturus as 885: 618:Alramech, Alramech, Abramech, 1: 6543:Bright Star Catalogue objects 4165:Journal of Celtic Linguistics 4044:Daghavarian, Nazaret (1903). 3676:Star-names and their meanings 3425:, and see references therein. 3072:(4). Bristol, England: 2048. 2091: 2083:previous Chicago World's Fair 1566:Arcturus next to the head of 1409:suggested that Arcturus is a 1297:in the ultraviolet to atomic 1260:off the main sequence to the 1077:) from the Sun. The parallax 908:northern celestial hemisphere 748:northern celestial hemisphere 248:Note (category: variability): 4401:Astronomy & Astrophysics 4118:"Karandavyuha Sutra Page 45" 3383:Astronomy & Astrophysics 3225:Astronomy & Astrophysics 2970:Astronomy & Astrophysics 2913:Astronomy & Astrophysics 2860:Astronomy & Astrophysics 2122:(2). Paris, France: 653–64. 2048:and attributed to the stone 2044:, Arcturus was considered a 1439: 1235:Size comparison between the 1093:other than α Centauri. 1069:satellite, Arcturus is 36.7 1004:, these four stars form the 934:), whose apparent magnitude 811:. It is about the same mass 343:88.83 ± 0.54  7: 5113:Boötes in Chinese astronomy 4566:10.1051/0004-6361:200809611 4431:10.1051/0004-6361/201935234 3603:Knobel, E. B. (June 1895). 3360:10.1051/0004-6361/200811437 3255:10.1051/0004-6361/201833745 3202:10.1051/0004-6361/200912323 2991:10.1051/0004-6361/201015445 2943:10.1051/0004-6361/201525856 2890:10.1051/0004-6361/201220148 2609:"IAU Catalog of Star Names" 2429:10.1088/0004-6256/135/3/892 2352:10.1088/0004-6256/135/1/209 2266:10.1088/0004-637X/743/2/135 2026:as "The face of Arcturus". 1837:Polynesian Voyaging Society 1639:"the keeper of heaven". or 1625:A Treatise on the Astrolabe 1602:). This has been variously 1533:, it was linked to the god 1499:it lay between his thighs. 1454:Ursa Major § Mythology 1251: 876:Working Group on Star Names 754:; it was then cataloged as 746:, and the brightest in the 10: 6564: 5036:Astronomy and Astrophysics 4536:Astronomy and Astrophysics 4104:. Oxford: Clarendon Press. 3889:. New Haven, Connecticut: 3527:Eratosthenes et al. (2015) 3413:10.1051/0004-6361:20042356 3330:Astronomy and Astrophysics 3172:Astronomy and Astrophysics 2709:Rao, Joe (June 15, 2007). 2631:The Hundred Greatest Stars 2488:10.1051/0004-6361:20066633 2453:Astronomy and Astrophysics 2146:10.1051/0004-6361:20078357 2115:Astronomy and Astrophysics 1542:Babylonian star catalogues 1451: 1029:, or Muphrid, is only 3.3 18: 6415: 6364: 6333: 6163: 6137: 5894: 5885: 5859: 5803: 5733: 5560: 5448: 5290: 5140: 5131: 5108: 4890:The Astrophysical Journal 4843:The Astrophysical Journal 4796:The Astrophysical Journal 4583:The Astrophysical Journal 4497:Astronomische Nachrichten 4331:The Astrophysical Journal 4182:Walter, Philippe (2005). 3442:The Astrophysical Journal 3040:10.1134/S1063772908090060 2231:The Astrophysical Journal 2079:1933 Chicago World's Fair 2070:under the alternate name 1729: 1707: 1677: 1398:Possible planetary system 1337:. Arcturus is possibly a 1187:solar-type magnetic cycle 1089:a year, greater than any 904:apparent visual magnitude 847:), "watcher, guardian". 736:apparent visual magnitude 692: 685: 666: 616: 609: 605: 403: 398: 394: 262: 255: 172: 69: 40: 22:Arcturus (disambiguation) 4937:The Astronomical Journal 4749:The Astronomical Journal 4479:10.3847/1538-4365/aa9a41 4352:10.3847/1538-4357/ac69d6 4301:"Lincoln and the cosmos" 3065:The Astronomical Journal 2629:Kaler, James B. (2002). 2394:The Astronomical Journal 2331:The Astronomical Journal 1884:. It was equated to the 1614:. For example, the name 1448:Arcturus in Arctophyllax 1144:as the star has a lower 1045:Physical characteristics 914:in the night sky, after 5791:ZTF J153932.16+502738.8 5756:2MASS J15031961+2525196 5123:List of stars in Boötes 5102:Constellation of Boötes 5048:1996A&A...312..160Q 4558:2008A&A...485..561L 4423:2019A&A...631A..47K 4253:. Llewellyn Worldwide. 4207:Johnson, Flint (2002). 3842:Johnson, Diane (1998). 3405:2005A&A...435..289V 3352:2010A&A...509A..77K 3290:1990Ap&SS.169...77B 3247:2018A&A...620A..23O 3194:2009A&A...504..543T 2982:2011A&A...529A.100S 2935:2015A&A...580A.141L 2882:2012A&A...548A..55A 2667:. Hoboken, New Jersey: 2565:A Greek-English Lexicon 2540:A Greek-English Lexicon 2515:A Greek-English Lexicon 2480:2007A&A...465..593S 2460:(2). Bristol, England: 2238:(2). Bristol, England: 2138:2007A&A...474..653V 1646:"the keeper of north". 1282:with coverage from the 374:Absolute magnitude 251:H and K emission vary. 179:Evolutionary stage 162:Apparent magnitude 6518:Durchmusterung objects 4527:10.1002/asna.201011483 4391:10.1093/mnras/stab3301 3630:10.1093/mnras/55.8.429 2776:(2). London, England: 2024:meditative absorptions 1943:) and The First Ones ( 1571: 1449: 1272:stellar classification 1248: 1222:hydrogen shell burning 1054: 899: 870:in 1603. In 2016, the 831:is Latinised from the 6528:Gliese and GJ objects 6503:Arcturus moving group 3891:Yale University Press 3570:(2nd rev. ed.). 2663:Schaaf, Fred (2008). 1947:in Inuit languages). 1797:Polynesian navigators 1698:Chinese constellation 1668:, Arcturus is called 1565: 1518:Cultural significance 1447: 1234: 1202:color characteristics 1065:, as measured by the 1057:Based upon an annual 1052: 912:fourth-brightest star 893: 843:), "bear" and οὖρος ( 827:The traditional name 5817:HD 136418 b (Awasis) 5063:SolStation.com entry 4184:Artù. L'orso e il re 2401:(3). Paris, France: 1985:was called "Ezogh" ( 1422:substellar companion 1359:frequency separation 1181:that is heating the 1091:first magnitude star 1061:shift of 88.83  738:of −0.05, it is the 709:VizieR catalog entry 20:For other uses, see 6493:Suspected variables 6370:Astronomical events 5027:1998Obs...118..299G 4988:1999PASP..111..556T 4949:1999AJ....117.2998G 4912:2002ApJ...580..447R 4865:2003ApJ...591L.151R 4818:2004ApJ...601L..43N 4771:2005AJ....129.2836C 4722:2006PASP..118.1112G 4683:2007PASP..119..237B 4644:2007MNRAS.382L..48T 4595:2008ApJ...679.1531B 4519:2011AN....332...83K 4470:2018ApJS..234...25W 4382:2022MNRAS.509.4538I 4343:2022ApJ...932...57H 3989:Constellation Guide 3899:1941msra.book.....M 3860:1998nsaa.book.....J 3810:2010JAHH...13..220H 3718:1944PA.....52....8D 3678:. pp. 100–101. 3621:1895MNRAS..55..429K 3553:1998JBAA..108....9R 3507:"Star Tales Boötes" 3455:1993ApJ...413..339H 3157:2005ASPC..336..321H 3127:1968pmas.book.....G 3088:2003AJ....126.2048G 3032:2008ARep...52..749P 2827:2012MNRAS.425.3188R 2786:1998JBAA..108...79R 2677:2008bsdu.book.....S 2671:. pp. 126–36. 2669:John Wiley and Sons 2421:2008AJ....135..892C 2343:2008AJ....135..209M 2304:1989ApJS...71..245K 2258:2011ApJ...743..135R 2192:2002yCat.2237....0D 2046:Behenian fixed star 1963:Nazaret Daghavarian 1860:, Arcturus, called 1510:, became Canicula ( 1146:surface temperature 967:northern hemisphere 940:Jean-Baptiste Morin 694:Hipparcos Catalogue 667:Database references 555:Rotational velocity 363:(11.26 ± 0.07  37: 5198:(Asellus Secundus) 4716:(846): 1112–1118, 4305:Astronomy Magazine 4102:A Latin Dictionary 3298:10.1007/BF00640689 2016:Kāraṇḍavyūha Sūtra 1993:In popular culture 1600:Al Simak Lanceator 1572: 1450: 1434:astronomical units 1339:Population II star 1312:chromospheric wind 1249: 1241:Beta Ursae Majoris 1110:absolute magnitude 1055: 973:(or Plough in the 900: 762:in 1603, which is 611:Other designations 201:Apparent magnitude 191:Spectral type 35: 6538:Hipparcos objects 6523:Flamsteed objects 6429: 6428: 6411: 6410: 6360: 6359: 6352:IDCS J1426.5+3508 6329: 6328: 6206:Cloverleaf quasar 5881: 5880: 5855: 5854: 5799: 5798: 5206:(Asellus Tertius) 4260:978-0-87542-832-1 4236:Arthur of Britain 3869:978-1-86451-356-1 3772:978-1-85538-306-7 3744:978-0-8021-4877-3 3706:Popular Astronomy 3655:on March 16, 2012 3589:978-1-931559-44-7 3010:Astronomy Reports 2686:978-0-471-70410-2 2640:978-0-387-95436-3 2058:Cornelius Agrippa 1967:Armenian folklore 1906:Marquesas Islands 1817:Marquesas Islands 1799:knew Arcturus as 1770:Milingimbi Island 1720: 1694: 1666:Chinese astronomy 1592:Al Simak Al Ramih 1588:as-simāk ar-rāmiħ 1426:substellar object 1226:horizontal branch 1179:magnetic activity 959:celestial equator 768:Alpha Boötis 719:is the brightest 714: 713: 6555: 6470: 6469: 6468: 6458: 6457: 6446: 6445: 6444: 6437: 6421: 6420: 6366: 6365: 6335: 6334: 5892: 5891: 5861: 5860: 5805: 5804: 5720:136418 (Nikawiy) 5675:131496 (Arcalís) 5190:(Asellus Primus) 5138: 5137: 5095: 5088: 5081: 5072: 5071: 5051: 5030: 5009: 4999: 4982:(759): 556–558, 4970: 4960: 4943:(6): 2998–3006, 4931: 4905: 4903:astro-ph/0207368 4884: 4858: 4856:astro-ph/0306056 4849:(2): L151–L154, 4837: 4811: 4809:astro-ph/0311107 4790: 4764: 4762:astro-ph/0502516 4755:(6): 2836–2848, 4743: 4733: 4704: 4694: 4665: 4655: 4637: 4616: 4606: 4589:(2): 1531–1540, 4577: 4551: 4530: 4512: 4491: 4481: 4463: 4442: 4416: 4395: 4393: 4376:(3): 4538–4554, 4364: 4354: 4315: 4314: 4312: 4311: 4296: 4290: 4289: 4287: 4286: 4271: 4265: 4264: 4246: 4240: 4239: 4231: 4225: 4224: 4204: 4198: 4197: 4179: 4173: 4172: 4160: 4154: 4153: 4135: 4129: 4128: 4122: 4113: 4107: 4105: 4093: 4084: 4083: 4076: 4070: 4069: 4067: 4065: 4059: 4052: 4041: 4035: 4034: 4006: 4000: 3999: 3997: 3995: 3981: 3975: 3969: 3963: 3957: 3951: 3945: 3939: 3933: 3927: 3921: 3915: 3909: 3903: 3902: 3880: 3874: 3873: 3849: 3839: 3830: 3829: 3803: 3783: 3777: 3776: 3758: 3749: 3748: 3728: 3722: 3721: 3701: 3695: 3694: 3686: 3680: 3679: 3671: 3665: 3664: 3662: 3660: 3651:. Archived from 3641: 3635: 3634: 3632: 3600: 3594: 3593: 3563: 3557: 3556: 3536: 3530: 3524: 3518: 3517: 3515: 3513: 3502: 3496: 3495: 3475: 3469: 3468: 3466: 3432: 3426: 3424: 3398: 3396:astro-ph/0501669 3378: 3372: 3371: 3345: 3324: 3318: 3317: 3273: 3267: 3266: 3240: 3220: 3214: 3213: 3187: 3167: 3161: 3160: 3140: 3131: 3130: 3114: 3108: 3107: 3081: 3079:astro-ph/0308182 3058: 3052: 3051: 3025: 3005: 2996: 2995: 2993: 2961: 2955: 2954: 2928: 2908: 2902: 2901: 2875: 2855: 2849: 2848: 2838: 2820: 2796: 2790: 2789: 2763: 2752: 2751: 2749: 2747: 2732: 2726: 2725: 2723: 2721: 2706: 2700: 2697: 2691: 2690: 2660: 2645: 2644: 2626: 2620: 2619: 2617: 2615: 2605: 2599: 2598: 2596: 2594: 2589: 2581: 2575: 2574: 2572: 2571: 2556: 2550: 2549: 2547: 2546: 2531: 2525: 2524: 2522: 2521: 2506: 2500: 2499: 2473: 2471:astro-ph/0702172 2447: 2441: 2440: 2414: 2388: 2379: 2378: 2366: 2357: 2356: 2354: 2322: 2316: 2315: 2287: 2278: 2277: 2251: 2225: 2196: 2195: 2175: 2158: 2157: 2131: 2109: 2069: 2011:(circa 211 BC). 1823:and reached the 1809:Hawaiian Islands 1736: 1731: 1721: 1718: 1714: 1709: 1695: 1692: 1688: 1679: 1651:Indian astronomy 1644:ħāris al-shamāl’ 1620:Geoffrey Chaucer 1548:around 1100 BC. 1539:Three Stars Each 1393: 1383: 1377: 1369: 1351:asteroseismology 1299:absorption lines 1262:red giant branch 1206:red-giant branch 1165: 1157: 1019:(B-V +1.00) and 937: 788:, Arcturus is a 740:fourth-brightest 632: 597: 596: 595: 575: 573: 544: 542: 522: 520: 500: 498: 448: 446: 421: 419: 390: 388: 358:36.7 ± 0.2  322: 320: 314: 302: 300: 294: 195:K1.5 III Fe−0.5 184:Red giant branch 173:Characteristics 165: 145: 140: 131: 130: 127: 126: 123: 120: 117: 114: 111: 108: 70:Observation data 57: 50: 38: 34: 32: 25: 6563: 6562: 6558: 6557: 6556: 6554: 6553: 6552: 6478: 6477: 6476: 6466: 6464: 6452: 6442: 6440: 6432: 6430: 6425: 6407: 6356: 6339:Galaxy clusters 6325: 6321:ULAS J1342+0928 6291:SDSS J1430+2303 6261:Maisie's Galaxy 6256:MACS 1423-z7p64 6246:IRAS 13349+2438 6201:CLASS B1359+154 6159: 6133: 5877: 5851: 5795: 5776:SDSS J1433+1011 5771:SDSS J1416+1348 5741:CFBDSIR 1458+10 5729: 5556: 5444: 5286: 5127: 5104: 5099: 5068: 5059: 5054: 5015:The Observatory 4324: 4322:Further reading 4319: 4318: 4309: 4307: 4297: 4293: 4284: 4282: 4273: 4272: 4268: 4261: 4247: 4243: 4232: 4228: 4221: 4205: 4201: 4194: 4180: 4176: 4161: 4157: 4150: 4136: 4132: 4120: 4114: 4110: 4094: 4087: 4077: 4073: 4063: 4061: 4057: 4050: 4042: 4038: 4007: 4003: 3993: 3991: 3983: 3982: 3978: 3970: 3966: 3958: 3954: 3946: 3942: 3934: 3930: 3922: 3918: 3910: 3906: 3893:. p. 199. 3881: 3877: 3870: 3852:24, 69, 84, 112 3840: 3833: 3784: 3780: 3773: 3759: 3752: 3745: 3729: 3725: 3702: 3698: 3687: 3683: 3672: 3668: 3658: 3656: 3643: 3642: 3638: 3601: 3597: 3590: 3564: 3560: 3537: 3533: 3525: 3521: 3511: 3509: 3503: 3499: 3492: 3476: 3472: 3433: 3429: 3379: 3375: 3325: 3321: 3274: 3270: 3221: 3217: 3168: 3164: 3141: 3134: 3115: 3111: 3059: 3055: 3006: 2999: 2962: 2958: 2909: 2905: 2856: 2852: 2797: 2793: 2764: 2755: 2745: 2743: 2742:. April 8, 2018 2734: 2733: 2729: 2719: 2717: 2707: 2703: 2699:Schaaf, p. 257. 2698: 2694: 2687: 2661: 2648: 2641: 2627: 2623: 2613: 2611: 2607: 2606: 2602: 2592: 2590: 2587: 2583: 2582: 2578: 2569: 2567: 2557: 2553: 2544: 2542: 2532: 2528: 2519: 2517: 2507: 2503: 2448: 2444: 2389: 2382: 2367: 2360: 2323: 2319: 2288: 2281: 2226: 2199: 2176: 2161: 2110: 2099: 2094: 1995: 1941:Inuit languages 1933:Inuit astronomy 1858:Society Islands 1524:brightest stars 1520: 1460: 1442: 1430:mass of Jupiter 1400: 1391: 1381: 1379: 1376: 1367: 1365: 1347: 1308:carbon monoxide 1254: 1247:, and Arcturus. 1176: 1173: 1164: 1155: 1153: 1103:Arcturus stream 1079:margin of error 1063:milliarcseconds 1047: 995:Spring Triangle 935: 932:Rigil Kentaurus 888: 854:of Arcturus as 825: 772:Spring Triangle 707: 702: 697: 662: 627: 593: 591: 590: 588: 571: 569: 561: sin  540: 538: 518: 516: 496: 494: 484:Surface gravity 476: 473: 456: 453: 444: 442: 429: 426: 417: 415: 386: 384: 379: 362: 318: 316: 311: 298: 296: 279:−5.19 km/s 274: 269:Radial velocity 160: 143: 138:Right ascension 136: 105: 101: 71: 65: 63: 62: 61: 60: 59: 58: 33: 26: 19: 17: 12: 11: 5: 6561: 6551: 6550: 6545: 6540: 6535: 6530: 6525: 6520: 6515: 6510: 6505: 6500: 6495: 6490: 6475: 6474: 6462: 6450: 6427: 6426: 6416: 6413: 6412: 6409: 6408: 6406: 6405: 6400: 6395: 6390: 6385: 6380: 6374: 6372: 6362: 6361: 6358: 6357: 6355: 6354: 6349: 6343: 6341: 6331: 6330: 6327: 6326: 6324: 6323: 6318: 6313: 6308: 6303: 6298: 6293: 6288: 6283: 6278: 6273: 6268: 6263: 6258: 6253: 6248: 6243: 6238: 6233: 6228: 6223: 6218: 6213: 6208: 6203: 6198: 6193: 6188: 6183: 6178: 6173: 6167: 6165: 6161: 6160: 6158: 6157: 6152: 6147: 6141: 6139: 6135: 6134: 6132: 6131: 6126: 6121: 6116: 6111: 6106: 6101: 6096: 6091: 6086: 6081: 6076: 6071: 6066: 6061: 6056: 6051: 6046: 6041: 6036: 6031: 6026: 6021: 6016: 6011: 6006: 6001: 5996: 5991: 5986: 5981: 5976: 5971: 5966: 5961: 5956: 5951: 5946: 5941: 5936: 5931: 5926: 5921: 5916: 5911: 5906: 5900: 5898: 5889: 5883: 5882: 5879: 5878: 5876: 5875: 5869: 5867: 5857: 5856: 5853: 5852: 5850: 5849: 5844: 5839: 5834: 5829: 5824: 5819: 5813: 5811: 5801: 5800: 5797: 5796: 5794: 5793: 5788: 5783: 5781:TVLM 513-46546 5778: 5773: 5768: 5766:PSR J1544+4937 5763: 5758: 5753: 5748: 5743: 5737: 5735: 5731: 5730: 5728: 5727: 5722: 5717: 5712: 5707: 5702: 5697: 5692: 5687: 5682: 5677: 5672: 5667: 5662: 5657: 5652: 5647: 5642: 5637: 5632: 5627: 5622: 5617: 5612: 5607: 5602: 5597: 5592: 5587: 5582: 5577: 5572: 5566: 5564: 5558: 5557: 5555: 5554: 5549: 5544: 5539: 5534: 5525: 5520: 5515: 5510: 5505: 5500: 5495: 5490: 5485: 5480: 5475: 5470: 5465: 5460: 5454: 5452: 5446: 5445: 5443: 5442: 5437: 5432: 5427: 5422: 5417: 5412: 5407: 5402: 5397: 5392: 5387: 5382: 5377: 5372: 5367: 5362: 5357: 5352: 5347: 5342: 5337: 5332: 5327: 5322: 5317: 5312: 5307: 5302: 5296: 5294: 5288: 5287: 5285: 5284: 5279: 5274: 5269: 5264: 5259: 5254: 5249: 5244: 5239: 5234: 5229: 5224: 5219: 5217:μ (Alkalurops) 5214: 5209: 5201: 5193: 5185: 5180: 5175: 5170: 5162: 5157: 5152: 5146: 5144: 5135: 5129: 5128: 5126: 5125: 5120: 5115: 5109: 5106: 5105: 5098: 5097: 5090: 5083: 5075: 5066: 5065: 5058: 5057:External links 5055: 5053: 5052: 5031: 5010: 4997:10.1086/316353 4971: 4958:10.1086/300878 4932: 4920:10.1086/343040 4896:(1): 447–458, 4885: 4873:10.1086/377211 4838: 4826:10.1086/381751 4802:(1): L43–L46, 4791: 4779:10.1086/429887 4744: 4731:10.1086/507077 4705: 4692:10.1086/512731 4666: 4628:(1): L48–L52, 4617: 4604:10.1086/587783 4578: 4542:(2): 561–570, 4531: 4492: 4443: 4396: 4365: 4325: 4323: 4320: 4317: 4316: 4291: 4266: 4259: 4241: 4226: 4220:978-0761822189 4219: 4199: 4193:978-8886495806 4192: 4174: 4155: 4149:978-3825351076 4148: 4130: 4108: 4085: 4071: 4053:. p. 19. 4036: 4023:10.2307/533799 4017:(49): 92–103. 4001: 3976: 3974:, p. 260. 3964: 3962:, p. 210. 3952: 3950:, p. 264. 3940: 3938:, p. 221. 3928: 3926:, p. 280. 3916: 3914:, p. 209. 3904: 3875: 3868: 3831: 3778: 3771: 3750: 3743: 3723: 3696: 3681: 3666: 3636: 3595: 3588: 3582:. p. 19. 3558: 3531: 3519: 3505:Ridpath, Ian. 3497: 3490: 3470: 3464:10.1086/173002 3449:(1): 339–348. 3427: 3389:(1): 289–301. 3373: 3319: 3284:(1–2): 77–84. 3268: 3215: 3162: 3132: 3109: 3096:10.1086/378365 3053: 3016:(9): 749–759. 2997: 2956: 2903: 2850: 2791: 2753: 2727: 2701: 2692: 2685: 2646: 2639: 2621: 2600: 2576: 2551: 2526: 2501: 2462:IOP Publishing 2442: 2380: 2358: 2337:(1): 209–231. 2317: 2312:10.1086/191373 2279: 2240:IOP Publishing 2197: 2159: 2096: 2095: 2093: 2090: 2020:Avalokiteśvara 1994: 1991: 1888:constellation 1868:afterlife. In 1732:; pinyin: 1728:(Chinese: 1710:; pinyin: 1706:(Chinese: 1637:ħāris al-samā’ 1522:As one of the 1519: 1516: 1441: 1438: 1399: 1396: 1389: 1374: 1346: 1343: 1327:alpha elements 1319:atomic numbers 1295:emission lines 1264:, reaching an 1253: 1250: 1212:to ignite the 1174: 1171: 1162: 1148:than the Sun. 1132:of −2.2, only 1046: 1043: 887: 884: 882:for α Boötis. 866:) was made by 824: 821: 752:ancient Greece 712: 711: 690: 689: 683: 682: 677: 669: 668: 664: 663: 661: 3242.00 653: 100944, 641: 124897, 617: 614: 613: 607: 606: 603: 602: 586: 578: 577: 567: 550: 549: 536: 528: 527: 514: 506: 505: 492: 479: 478: 474: 471: 467: 459: 458: 454: 451: 440: 432: 431: 427: 424: 413: 405: 404: 401: 400: 396: 395: 392: 391: 382: 377: 369: 368: 356: 348: 347: 341: 332: 331: 290: 281: 280: 277: 272: 264: 263: 260: 259: 253: 252: 249: 245: 244: 241: 234: 233: 230: 223: 222: 219: 212: 211: 208: 197: 196: 193: 187: 186: 181: 175: 174: 170: 169: 166: 157: 156: 153: 147: 146: 141: 133: 132: 99: 93: 92: 87: 81: 80: 67: 66: 52: 51: 45: 44: 43: 42: 41: 15: 9: 6: 4: 3: 2: 6560: 6549: 6546: 6544: 6541: 6539: 6536: 6534: 6531: 6529: 6526: 6524: 6521: 6519: 6516: 6514: 6513:Bayer objects 6511: 6509: 6506: 6504: 6501: 6499: 6496: 6494: 6491: 6489: 6488:K-type giants 6486: 6485: 6483: 6473: 6463: 6461: 6456: 6451: 6449: 6439: 6438: 6435: 6424: 6414: 6404: 6401: 6399: 6396: 6394: 6391: 6389: 6386: 6384: 6381: 6379: 6376: 6375: 6373: 6371: 6367: 6363: 6353: 6350: 6348: 6345: 6344: 6342: 6340: 6336: 6332: 6322: 6319: 6317: 6314: 6312: 6309: 6307: 6304: 6302: 6299: 6297: 6296:Teacup galaxy 6294: 6292: 6289: 6287: 6284: 6282: 6279: 6277: 6274: 6272: 6269: 6267: 6266:Markarian 463 6264: 6262: 6259: 6257: 6254: 6252: 6249: 6247: 6244: 6242: 6239: 6237: 6234: 6232: 6229: 6227: 6224: 6222: 6219: 6217: 6214: 6212: 6209: 6207: 6204: 6202: 6199: 6197: 6194: 6192: 6189: 6187: 6184: 6182: 6179: 6177: 6174: 6172: 6169: 6168: 6166: 6162: 6156: 6153: 6151: 6148: 6146: 6143: 6142: 6140: 6136: 6130: 6127: 6125: 6122: 6120: 6117: 6115: 6112: 6110: 6107: 6105: 6102: 6100: 6097: 6095: 6092: 6090: 6087: 6085: 6082: 6080: 6077: 6075: 6072: 6070: 6067: 6065: 6062: 6060: 6057: 6055: 6052: 6050: 6047: 6045: 6042: 6040: 6037: 6035: 6032: 6030: 6027: 6025: 6022: 6020: 6017: 6015: 6012: 6010: 6007: 6005: 6002: 6000: 5997: 5995: 5992: 5990: 5987: 5985: 5982: 5980: 5977: 5975: 5972: 5970: 5967: 5965: 5962: 5960: 5957: 5955: 5952: 5950: 5947: 5945: 5942: 5940: 5937: 5935: 5932: 5930: 5927: 5925: 5922: 5920: 5917: 5915: 5912: 5910: 5907: 5905: 5902: 5901: 5899: 5897: 5893: 5890: 5888: 5884: 5874: 5871: 5870: 5868: 5866: 5865:Star clusters 5862: 5858: 5848: 5845: 5843: 5840: 5838: 5835: 5833: 5830: 5828: 5825: 5823: 5820: 5818: 5815: 5814: 5812: 5810: 5806: 5802: 5792: 5789: 5787: 5784: 5782: 5779: 5777: 5774: 5772: 5769: 5767: 5764: 5762: 5759: 5757: 5754: 5752: 5749: 5747: 5744: 5742: 5739: 5738: 5736: 5732: 5726: 5723: 5721: 5718: 5716: 5713: 5711: 5708: 5706: 5703: 5701: 5698: 5696: 5693: 5691: 5688: 5686: 5683: 5681: 5678: 5676: 5673: 5671: 5668: 5666: 5663: 5661: 5658: 5656: 5653: 5651: 5648: 5646: 5643: 5641: 5638: 5636: 5633: 5631: 5628: 5626: 5623: 5621: 5618: 5616: 5613: 5611: 5608: 5606: 5603: 5601: 5598: 5596: 5593: 5591: 5588: 5586: 5583: 5581: 5578: 5576: 5573: 5571: 5568: 5567: 5565: 5563: 5559: 5553: 5550: 5548: 5545: 5543: 5540: 5538: 5535: 5533: 5531: 5526: 5524: 5521: 5519: 5516: 5514: 5511: 5509: 5506: 5504: 5501: 5499: 5496: 5494: 5491: 5489: 5486: 5484: 5481: 5479: 5476: 5474: 5471: 5469: 5466: 5464: 5461: 5459: 5456: 5455: 5453: 5451: 5447: 5441: 5438: 5436: 5433: 5431: 5428: 5426: 5423: 5421: 5418: 5416: 5413: 5411: 5408: 5406: 5405:38 (h, Merga) 5403: 5401: 5398: 5396: 5393: 5391: 5388: 5386: 5383: 5381: 5378: 5376: 5373: 5371: 5368: 5366: 5363: 5361: 5358: 5356: 5353: 5351: 5348: 5346: 5343: 5341: 5338: 5336: 5333: 5331: 5328: 5326: 5323: 5321: 5318: 5316: 5313: 5311: 5308: 5306: 5303: 5301: 5298: 5297: 5295: 5293: 5289: 5283: 5280: 5278: 5275: 5273: 5270: 5268: 5265: 5263: 5260: 5258: 5255: 5253: 5250: 5248: 5245: 5243: 5240: 5238: 5235: 5233: 5230: 5228: 5225: 5223: 5220: 5218: 5215: 5213: 5210: 5208: 5207: 5202: 5200: 5199: 5194: 5192: 5191: 5186: 5184: 5181: 5179: 5176: 5174: 5171: 5169: 5168: 5163: 5161: 5158: 5156: 5153: 5151: 5148: 5147: 5145: 5143: 5139: 5136: 5134: 5130: 5124: 5121: 5119: 5116: 5114: 5111: 5110: 5107: 5103: 5096: 5091: 5089: 5084: 5082: 5077: 5076: 5073: 5069: 5064: 5061: 5060: 5049: 5045: 5041: 5037: 5032: 5028: 5024: 5020: 5016: 5011: 5007: 5003: 4998: 4993: 4989: 4985: 4981: 4977: 4972: 4968: 4964: 4959: 4954: 4950: 4946: 4942: 4938: 4933: 4929: 4925: 4921: 4917: 4913: 4909: 4904: 4899: 4895: 4891: 4886: 4882: 4878: 4874: 4870: 4866: 4862: 4857: 4852: 4848: 4844: 4839: 4835: 4831: 4827: 4823: 4819: 4815: 4810: 4805: 4801: 4797: 4792: 4788: 4784: 4780: 4776: 4772: 4768: 4763: 4758: 4754: 4750: 4745: 4741: 4737: 4732: 4727: 4723: 4719: 4715: 4711: 4706: 4702: 4698: 4693: 4688: 4684: 4680: 4676: 4672: 4667: 4663: 4659: 4654: 4649: 4645: 4641: 4636: 4631: 4627: 4623: 4618: 4614: 4610: 4605: 4600: 4596: 4592: 4588: 4584: 4579: 4575: 4571: 4567: 4563: 4559: 4555: 4550: 4545: 4541: 4537: 4532: 4528: 4524: 4520: 4516: 4511: 4506: 4502: 4498: 4493: 4489: 4485: 4480: 4475: 4471: 4467: 4462: 4457: 4453: 4449: 4444: 4440: 4436: 4432: 4428: 4424: 4420: 4415: 4410: 4406: 4402: 4397: 4392: 4387: 4383: 4379: 4375: 4371: 4366: 4362: 4358: 4353: 4348: 4344: 4340: 4336: 4332: 4327: 4326: 4306: 4302: 4295: 4280: 4276: 4270: 4262: 4256: 4252: 4245: 4237: 4230: 4222: 4216: 4212: 4211: 4203: 4195: 4189: 4185: 4178: 4170: 4166: 4159: 4151: 4145: 4141: 4134: 4126: 4125:Pacificbuddha 4119: 4112: 4103: 4099: 4092: 4090: 4081: 4075: 4056: 4049: 4048: 4040: 4032: 4028: 4024: 4020: 4016: 4012: 4005: 3990: 3986: 3980: 3973: 3972:Makemson 1941 3968: 3961: 3960:Makemson 1941 3956: 3949: 3948:Makemson 1941 3944: 3937: 3936:Makemson 1941 3932: 3925: 3924:Makemson 1941 3920: 3913: 3912:Makemson 1941 3908: 3900: 3896: 3892: 3888: 3887: 3879: 3871: 3865: 3861: 3857: 3853: 3848: 3847: 3838: 3836: 3827: 3823: 3819: 3815: 3811: 3807: 3802: 3797: 3794:(3): 220–34. 3793: 3789: 3782: 3774: 3768: 3764: 3757: 3755: 3746: 3740: 3736: 3735: 3727: 3719: 3715: 3711: 3707: 3700: 3692: 3685: 3677: 3670: 3654: 3650: 3646: 3640: 3631: 3626: 3622: 3618: 3614: 3610: 3606: 3599: 3591: 3585: 3581: 3577: 3573: 3569: 3562: 3554: 3550: 3546: 3542: 3535: 3528: 3523: 3508: 3501: 3493: 3491:9780198716983 3487: 3483: 3482: 3474: 3465: 3460: 3456: 3452: 3448: 3444: 3443: 3438: 3431: 3422: 3418: 3414: 3410: 3406: 3402: 3397: 3392: 3388: 3384: 3377: 3369: 3365: 3361: 3357: 3353: 3349: 3344: 3339: 3335: 3331: 3323: 3315: 3311: 3307: 3303: 3299: 3295: 3291: 3287: 3283: 3279: 3272: 3264: 3260: 3256: 3252: 3248: 3244: 3239: 3234: 3230: 3226: 3219: 3211: 3207: 3203: 3199: 3195: 3191: 3186: 3181: 3177: 3173: 3166: 3158: 3154: 3150: 3146: 3139: 3137: 3128: 3124: 3120: 3113: 3105: 3101: 3097: 3093: 3089: 3085: 3080: 3075: 3071: 3067: 3066: 3057: 3049: 3045: 3041: 3037: 3033: 3029: 3024: 3019: 3015: 3011: 3004: 3002: 2992: 2987: 2983: 2979: 2975: 2971: 2967: 2960: 2952: 2948: 2944: 2940: 2936: 2932: 2927: 2922: 2918: 2914: 2907: 2899: 2895: 2891: 2887: 2883: 2879: 2874: 2869: 2865: 2861: 2854: 2846: 2842: 2837: 2832: 2828: 2824: 2819: 2814: 2810: 2806: 2802: 2795: 2787: 2783: 2779: 2775: 2771: 2770: 2762: 2760: 2758: 2741: 2737: 2731: 2716: 2712: 2705: 2696: 2688: 2682: 2678: 2674: 2670: 2666: 2659: 2657: 2655: 2653: 2651: 2642: 2636: 2632: 2625: 2610: 2604: 2586: 2580: 2566: 2562: 2555: 2541: 2537: 2530: 2516: 2512: 2505: 2497: 2493: 2489: 2485: 2481: 2477: 2472: 2467: 2463: 2459: 2455: 2454: 2446: 2438: 2434: 2430: 2426: 2422: 2418: 2413: 2408: 2404: 2400: 2396: 2395: 2387: 2385: 2376: 2372: 2365: 2363: 2353: 2348: 2344: 2340: 2336: 2332: 2328: 2321: 2313: 2309: 2305: 2301: 2297: 2293: 2286: 2284: 2275: 2271: 2267: 2263: 2259: 2255: 2250: 2245: 2241: 2237: 2233: 2232: 2224: 2222: 2220: 2218: 2216: 2214: 2212: 2210: 2208: 2206: 2204: 2202: 2193: 2189: 2185: 2181: 2174: 2172: 2170: 2168: 2166: 2164: 2155: 2151: 2147: 2143: 2139: 2135: 2130: 2125: 2121: 2117: 2116: 2108: 2106: 2104: 2102: 2097: 2089: 2086: 2084: 2080: 2075: 2073: 2068: 2063: 2059: 2055: 2051: 2047: 2043: 2038: 2036: 2032: 2027: 2025: 2021: 2017: 2012: 2010: 2009: 2004: 2000: 1990: 1988: 1984: 1980: 1979:constellation 1976: 1972: 1968: 1964: 1959: 1957: 1953: 1948: 1946: 1942: 1938: 1934: 1929: 1927: 1923: 1919: 1915: 1911: 1907: 1903: 1899: 1895: 1891: 1887: 1883: 1879: 1875: 1871: 1867: 1863: 1859: 1855: 1850: 1848: 1844: 1843: 1838: 1834: 1830: 1826: 1822: 1818: 1814: 1810: 1806: 1802: 1798: 1793: 1791: 1787: 1783: 1779: 1775: 1771: 1767: 1763: 1759: 1755: 1751: 1750:Marpean-kurrk 1747: 1744: 1739: 1737: 1727: 1726: 1715: 1705: 1704: 1699: 1689: 1683: 1675: 1671: 1667: 1662: 1660: 1656: 1652: 1647: 1645: 1642: 1638: 1635: 1631: 1630:Haris-el-sema 1627: 1626: 1621: 1617: 1613: 1609: 1605: 1601: 1597: 1593: 1589: 1585: 1581: 1577: 1569: 1564: 1560: 1558: 1554: 1553:Work and Days 1549: 1547: 1543: 1540: 1536: 1532: 1527: 1525: 1515: 1513: 1509: 1505: 1500: 1498: 1494: 1490: 1486: 1482: 1480: 1479: 1474: 1469: 1465: 1459: 1455: 1446: 1437: 1435: 1431: 1427: 1423: 1418: 1416: 1412: 1408: 1404: 1395: 1392: 1388: 1373: 1362: 1360: 1356: 1352: 1342: 1340: 1336: 1332: 1328: 1324: 1320: 1315: 1313: 1309: 1305: 1300: 1296: 1291: 1289: 1285: 1281: 1277: 1273: 1270: 1267: 1263: 1259: 1256:Arcturus has 1246: 1242: 1238: 1233: 1229: 1227: 1223: 1219: 1215: 1211: 1207: 1203: 1198: 1196: 1192: 1188: 1184: 1180: 1169: 1161: 1149: 1147: 1143: 1139: 1135: 1131: 1128: 1124: 1120: 1115: 1111: 1106: 1104: 1100: 1099:old-disk star 1094: 1092: 1088: 1084: 1083:proper motion 1080: 1076: 1072: 1068: 1064: 1060: 1051: 1042: 1040: 1036: 1032: 1028: 1024: 1023:(B-V +1.54). 1022: 1018: 1014: 1009: 1007: 1006:Great Diamond 1003: 999: 996: 992: 988: 984: 980: 976: 972: 968: 964: 960: 956: 951: 949: 945: 941: 933: 929: 925: 921: 917: 913: 909: 905: 897: 892: 883: 881: 877: 873: 869: 865: 861: 857: 853: 848: 846: 842: 838: 834: 833:ancient Greek 830: 820: 818: 814: 810: 809:main sequence 806: 802: 799: 795: 794:spectral type 791: 787: 783: 778: 776: 773: 769: 765: 761: 757: 756:α Boötis 753: 749: 745: 741: 737: 733: 729: 728:constellation 726: 722: 718: 710: 705: 700: 695: 691: 688: 687:Data sources: 684: 681: 678: 676: 675: 671: 670: 665: 660: 656: 652: 648: 645: 69673, 644: 640: 636: 630: 625: 621: 615: 612: 608: 604: 601: 587: 585: 584: 580: 579: 568: 566: 564: 560: 556: 552: 551: 548: 537: 535: 534: 530: 529: 526: 515: 513: 512: 508: 507: 504: 493: 491: 489: 485: 481: 480: 477: 468: 466: 465: 461: 460: 457: 441: 439: 438: 434: 433: 430: 414: 412: 411: 407: 406: 402: 397: 393: 383: 381: 375: 371: 370: 366: 361: 357: 355: 354: 350: 349: 346: 342: 340: 338: 334: 333: 330: 326: 310: 306: 291: 289: 287: 286:Proper motion 283: 282: 278: 276: 270: 266: 265: 261: 258: 254: 250: 247: 242: 240: 236: 235: 231: 229: 225: 224: 220: 218: 214: 213: 209: 206: 202: 199: 198: 194: 192: 189: 188: 185: 182: 180: 177: 176: 171: 167: 163: 159: 158: 154: 152: 149: 148: 142: 139: 135: 134: 129: 100: 98: 97:Pronunciation 95: 94: 91: 88: 86: 85:Constellation 83: 82: 78: 74: 68: 56: 49: 39: 30: 23: 6286:PKS 1345+125 6271:MS 1512-cB58 6251:LEDA 2108986 5529: 5205: 5197: 5189: 5166: 5150:α (Arcturus) 5149: 5067: 5039: 5035: 5018: 5014: 4979: 4975: 4940: 4936: 4893: 4889: 4846: 4842: 4799: 4795: 4752: 4748: 4713: 4709: 4677:(852): 237, 4674: 4670: 4625: 4621: 4586: 4582: 4539: 4535: 4500: 4496: 4451: 4447: 4404: 4400: 4373: 4369: 4334: 4330: 4308:. Retrieved 4304: 4294: 4283:. Retrieved 4278: 4269: 4250: 4244: 4235: 4229: 4209: 4202: 4183: 4177: 4168: 4164: 4158: 4139: 4133: 4124: 4111: 4101: 4074: 4062:. Retrieved 4046: 4039: 4014: 4010: 4004: 3992:. Retrieved 3988: 3979: 3967: 3955: 3943: 3931: 3919: 3907: 3885: 3878: 3845: 3791: 3787: 3781: 3762: 3733: 3726: 3709: 3705: 3699: 3690: 3684: 3675: 3669: 3657:. Retrieved 3653:the original 3648: 3639: 3612: 3608: 3598: 3567: 3561: 3544: 3540: 3534: 3522: 3510:. Retrieved 3500: 3480: 3473: 3446: 3440: 3430: 3386: 3382: 3376: 3333: 3329: 3322: 3281: 3277: 3271: 3228: 3224: 3218: 3175: 3171: 3165: 3148: 3144: 3118: 3112: 3069: 3063: 3056: 3013: 3009: 2973: 2969: 2959: 2916: 2912: 2906: 2863: 2859: 2853: 2808: 2804: 2794: 2773: 2767: 2744:. Retrieved 2740:earthsky.org 2739: 2730: 2718:. Retrieved 2714: 2704: 2695: 2664: 2630: 2624: 2612:. Retrieved 2603: 2591:. Retrieved 2579: 2568:. Retrieved 2564: 2554: 2543:. Retrieved 2539: 2529: 2518:. Retrieved 2514: 2504: 2457: 2451: 2445: 2403:EDP Sciences 2398: 2392: 2374: 2334: 2330: 2320: 2295: 2291: 2235: 2229: 2183: 2179: 2119: 2113: 2087: 2076: 2071: 2039: 2028: 2013: 2006: 1999:Ancient Rome 1996: 1971:Gutani astgh 1970: 1960: 1955: 1949: 1944: 1937:Uttuqalualuk 1936: 1930: 1926:Orion's Belt 1921: 1909: 1901: 1897: 1889: 1881: 1873: 1861: 1851: 1840: 1807:star of the 1800: 1795:Prehistoric 1794: 1789: 1777: 1761: 1753: 1752:, mother of 1749: 1740: 1733: 1723: 1711: 1701: 1685: 1669: 1663: 1661:'s kāvyas. 1648: 1643: 1640: 1636: 1633: 1629: 1623: 1615: 1611: 1607: 1599: 1591: 1587: 1579: 1573: 1568:Comet Donati 1552: 1550: 1538: 1528: 1521: 1501: 1496: 1488: 1483: 1476: 1461: 1421: 1419: 1414: 1401: 1386: 1371: 1363: 1348: 1345:Oscillations 1329:relative to 1316: 1292: 1255: 1214:helium flash 1199: 1159: 1150: 1107: 1095: 1056: 1025: 1012: 1010: 952: 931: 922:(−0.72) and 901: 879: 874:organized a 868:Johann Bayer 864:Alpha Boötis 863: 855: 849: 844: 840: 836: 828: 826: 823:Nomenclature 779: 767: 760:Johann Bayer 755: 742:star in the 716: 715: 686: 672: 649: 5340, 581: 562: 558: 553: 531: 509: 487: 482: 462: 435: 408: 372: 351: 335: 284: 267: 6548:TIC objects 6472:Outer space 6383:GRB 080319B 6281:PGC 1470080 6276:PG 1543+489 6196:CEERS-93316 5837:HD 132406 b 5827:HD 128311 b 5183:η (Muphrid) 5160:γ (Seginus) 5118:Boötes Void 5042:: 160–166, 5021:: 299–301, 4064:12 February 3547:(1): 9–28. 3512:27 November 2811:(4): 3188. 2511:"Ἀρκτοῦρος" 2464:: 593–601. 2405:: 892–906. 2371:"HIP 69673" 2062:kabbalistic 2060:listed its 2042:Middle Ages 2035:King Arthur 1958:, the owl. 1956:Kookoogwéss 1894:frigatebird 1892:, meaning " 1854:Polynesians 1829:trade winds 1774:Arnhem Land 1641:حارس الشمال 1634:حارس السماء 1618:is used in 1557:Renaissance 1531:Mesopotamia 1529:In ancient 1411:binary star 1335:metallicity 1304:photosphere 1284:ultraviolet 1191:photosphere 1136:(−2.9) and 1071:light-years 1031:light-years 961:. The star 928:binary star 886:Observation 852:designation 835:Ἀρκτοῦρος ( 782:light-years 637: 541, 533:Metallicity 511:Temperature 239:color index 228:color index 217:color index 151:Declination 6482:Categories 6403:SN 2020tlf 6378:GRB 990123 6347:Abell 1795 6191:CEERS-2112 5842:τ Boötis b 5809:Exoplanets 5746:Gliese 526 5590:125351 (A) 5212:λ (Xuange) 5167:(Princeps) 5155:β (Nekkar) 4461:1712.06942 4414:1909.04949 4310:2022-08-28 4285:2022-08-28 4098:"arctūrus" 3985:"Arcturus" 3615:(8): 429. 3238:1809.01181 3178:(2): 543. 2926:1505.01529 2570:2019-01-16 2545:2019-01-16 2520:2019-01-16 2092:References 1920:called it 1878:Hawaiʻiloa 1847:wayfinding 1833:Big Island 1762:Weet-kurrk 1743:Wotjobaluk 1659:Bhartṛhari 1544:and later 1489:Phaenomena 1452:See also: 1407:astrometry 1405:satellite 1355:microhertz 1158:0.06  1134:Betelgeuse 1123:bolometric 1087:arcseconds 1008:asterism. 1002:Cor Caroli 971:Big Dipper 963:culminates 948:supernovae 924:α Centauri 813:as the Sun 734:. With an 657: 48, 576: km/s 486:(log  464:Luminosity 257:Astrometry 144:14 15 39.7 6448:Astronomy 6398:SN 2005bc 6393:SN 2003fg 6216:EGS-zs8-1 5292:Flamsteed 4967:120907426 4881:119083930 4787:119419198 4740:120918694 4701:121637958 4635:0706.3346 4613:121170557 4549:0804.0192 4510:1012.3321 4503:(1): 83, 4488:119356096 4454:(2): 25, 4439:202558933 4361:249880096 4337:(1): 57, 3826:118454721 3801:1010.4610 3659:March 28, 3572:Cambridge 3343:0811.4674 3314:120697563 3306:0004-640X 3263:119095123 3185:0907.0065 3104:119417105 3048:119268407 3023:0807.3667 2873:1210.1160 2845:119253279 2818:1207.0767 2780:: 79–89. 2746:14 August 2720:14 August 2715:Space.com 2412:0711.4984 2274:119186472 2249:1109.4425 2129:0708.1752 2072:Alchameth 2005:' comedy 1945:Sivulliik 1902:Hoku-leʻa 1886:Tuamotuan 1882:Hoku-leʻa 1856:. In the 1782:spikerush 1604:romanized 1478:Astronomy 1440:Mythology 1415:Hipparcos 1403:Hipparcos 1384:3.4  1370:0.2  1168:dredge-up 1138:R Doradus 1130:magnitude 1121:; total ( 1067:Hipparcos 1021:Aldebaran 860:Latinised 837:Arktouros 790:red giant 784:from the 764:Latinized 744:night sky 624:16 Boötis 469:170  164: (V) 36:Arcturus 29:HD 125351 6423:Category 6388:SCP 06F6 6316:UGC 9796 6311:UGC 9684 6306:UGC 9425 6301:UGC 9128 6138:Numbered 5887:Galaxies 5873:NGC 5466 5847:WASP-14b 5822:HAT-P-4b 5761:LHS 2924 5450:Variable 5173:ε (Izar) 4834:10638792 4574:18853087 4127:. 84000. 4055:Archived 3421:14176311 3368:15061735 2951:53652388 2919:: A141. 2898:56386673 2536:"ἄρκτος" 2496:55901104 2154:18759600 2054:plantain 2052:and the 1987:Armenian 1975:Armenian 1874:Hoku-iwa 1866:Tahitian 1842:Hōkūleʻa 1825:latitude 1815:and the 1801:Hōkūleʻa 1790:Guembila 1766:wood ant 1735:Kàng Xiǔ 1725:Kang Xiu 1713:Jiǎo Xiǔ 1703:Jiao Xiu 1580:al-simāk 1546:MUL.APIN 1497:Almagest 1468:Callisto 1390:☉ 1375:☉ 1288:infrared 1252:Spectrum 1218:hydrogen 1175:☉ 1163:☉ 1142:efficacy 1119:infrared 1108:With an 1059:parallax 1027:η Boötis 998:asterism 991:Denebola 936:is −0.01 910:and the 902:With an 880:Arcturus 856:α Boötis 829:Arcturus 817:its size 807:off the 801:hydrogen 775:asterism 725:northern 717:Arcturus 631:+19°2777 475:☉ 455:☉ 428:☉ 376: (M 353:Distance 337:Parallax 6434:Portals 6241:IC 4516 6236:IC 4481 6231:IC 4462 6226:IC 4461 6221:EGSY8p7 6211:DDO 190 6171:Arp 302 5786:WASP-14 5751:HAT-P-4 5530:101 Vir 5044:Bibcode 5023:Bibcode 5006:2441153 4984:Bibcode 4945:Bibcode 4928:7672420 4908:Bibcode 4861:Bibcode 4814:Bibcode 4767:Bibcode 4718:Bibcode 4679:Bibcode 4662:5666311 4640:Bibcode 4591:Bibcode 4554:Bibcode 4515:Bibcode 4466:Bibcode 4419:Bibcode 4407:: A47, 4378:Bibcode 4339:Bibcode 4080:Plautus 3994:20 June 3895:Bibcode 3856:Bibcode 3806:Bibcode 3714:Bibcode 3617:Bibcode 3580:Sky Pub 3549:Bibcode 3451:Bibcode 3401:Bibcode 3348:Bibcode 3336:: A77. 3286:Bibcode 3243:Bibcode 3210:6408779 3190:Bibcode 3153:Bibcode 3151:: 321. 3123:Bibcode 3084:Bibcode 3028:Bibcode 2994:. A100. 2978:Bibcode 2953:. A141. 2931:Bibcode 2878:Bibcode 2866:: A55. 2823:Bibcode 2782:Bibcode 2673:Bibcode 2614:28 July 2593:28 July 2561:"οὖρος" 2476:Bibcode 2437:2756572 2417:Bibcode 2339:Bibcode 2300:Bibcode 2298:: 245. 2254:Bibcode 2242:: 135. 2188:Bibcode 2134:Bibcode 2040:In the 2003:Plautus 1952:Miꞌkmaq 1922:Tautoru 1918:Moriori 1910:Tau-tou 1890:Te Kiva 1821:equator 1792:"red". 1786:Weilwan 1758:Antares 1700:called 1674:Chinese 1670:Da Jiao 1632:, from 1616:Alramih 1612:Azimech 1570:in 1858 1512:Procyon 1504:Icarius 1495:in the 1493:Ptolemy 1487:in his 1473:Hyginus 1424:. This 1280:atlases 1258:evolved 1183:coronal 1075:parsecs 1073:(11.26 1035:Jupiter 1013:subrufa 1000:. With 987:Regulus 920:Canopus 805:evolved 723:in the 701:(2002), 399:Details 203: ( 77:Equinox 6508:Boötes 6186:3C 303 6181:3C 299 6176:3C 295 5725:141399 5715:135944 5710:135530 5705:135438 5700:134335 5695:134064 5690:132563 5685:132406 5680:132029 5670:131473 5665:131040 5660:130917 5655:130603 5650:130084 5645:129357 5640:129132 5635:128198 5630:128093 5625:127726 5620:127304 5615:126271 5610:126200 5605:126141 5600:126128 5595:125658 5585:125040 5580:122563 5575:118889 5570:118508 5435:47 (k) 5430:46 (b) 5425:45 (c) 5420:44 (i) 5375:24 (g) 5370:22 (f) 5340:12 (d) 5004:  4965:  4926:  4879:  4832:  4785:  4738:  4699:  4660:  4611:  4572:  4486:  4441:, A47. 4437:  4359:  4257:  4217:  4190:  4146:  4031:533799 4029:  3866:  3824:  3769:  3741:  3712:: 13. 3586:  3488:  3419:  3366:  3312:  3304:  3265:. A23. 3261:  3231:: 10. 3208:  3102:  3046:  2949:  2896:  2843:  2683:  2637:  2494:  2435:  2272:  2152:  2056:herb. 2050:Jasper 2031:Arthur 2008:Rudens 1983:Boötes 1870:Hawaii 1813:Tahiti 1805:zenith 1784:. 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Index

Arcturus (disambiguation)
HD 125351


Epoch
Equinox
Constellation
Boötes
Pronunciation
/ɑːrkˈtjʊərəs/
Right ascension
Declination
Apparent magnitude
Evolutionary stage
Red giant branch
Spectral type
Apparent magnitude
J
color index
color index
color index
Astrometry
Radial velocity
Proper motion
mas
yr
mas
yr
Parallax
mas

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