43:
3302:
711:
3326:
50:
3350:
646:
3338:
1792:
Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; Hoeg, E.; Bastian, U.; Bernacca, P. L.; Crézé, M.; Donati, F.; Grenon, M.; Grewing, M.; Van
Leeuwen, F.; Van Der Marel, H.; Mignard, F.; Murray, C. A.; Le Poole, R. S.; Schrijver, H.; Turon, C.; Arenou, F.; Froeschlé, M.; Petersen, C. S. (1997). "The
1415:
Oplištilová, A.; Mayer, P.; Harmanec, P.; Brož, M.; Pigulski, A.; Božić, H.; Zasche, P.; Šlechta, M.; Pablo, H.; Kołaczek-Szymański, P. A.; Moffat, A. F. J.; Lovekin, C. C.; Wade, G. A.; Zwintz, K.; Popowicz, A.; Weiss, W. W. (2023). "Spectrum of the secondary component and new orbital elements of
1260:
Ruban, E. V.; Alekseeva, G. A.; Arkharov, A. A.; Hagen-Thorn, E. I.; Galkin, V. D.; Nikanorova, I. N.; Novikov, V. V.; Pakhomov, V. P.; Puzakova, T. Yu. (September 2006). "Spectrophotometric observations of variable stars".
754:) and an age of 5.7 million years. A more recent detailed analysis of Alnilam across multiple wavelength bands produced very high luminosity, radius, and mass estimates, assuming the distance of 606
1114:
921:(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
680:
of this star has served as one of the stable anchor points by which other stars are classified, for the spectral class B0Ia. Although the spectrum shows variations, particular in the
1472:
Searle, S. C.; Prinja, R. K.; Massa, D.; Ryans, R. (2008). "Quantitative studies of the optical and UV spectra of
Galactic early B supergiants. I. Fundamental parameters".
1739:
Voss, R.; Diehl, R.; Vink, J. S.; Hartmann, D. H. (2010). "Probing the evolving massive star population in Orion with kinematic and radioactive tracers".
725:
Estimates of
Alnilam's properties vary. Searle and colleagues, using CMFGEN code to analyse the spectrum in 2008, calculated a luminosity of 537,000
1528:
Zsargó, J.; Fierro-Santillán, C. R.; Klapp, J.; Arrieta, A.; Arias, L.; Valencia, J. M.; Sigalotti, L. Di G.; Hareter, M.; Puebla, R. E. (2020-11-01),
544:
780:
at 606 parsecs is the highest ever derived for this star. Using precalculated models, a 2020 study found smaller values for luminosity (420,000
2116:
438:
766:
reduction gives a distance of 412 parsecs and physical parameters more consistent with earlier publications. The luminosity of 832,000
1879:
Crowther, P. A.; Lennon, D. J.; Walborn, N. R. (January 2006). "Physical parameters and wind properties of galactic early B supergiants".
743:. Analysis of the spectra and age of the members of the Orion OB1 association yields a mass 34.6 times that of the Sun (40.8
3405:
1073:
3390:
905:: all three variants are evidently mistakes in transliteration or copy errors, the first perhaps due to confusion with النيلم
2071:
2053:
1359:
Gontcharov, G. A. (November 2006). "Pulkovo
Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system".
1145:
2109:
980:
548:
3415:
914:
1230:
Ducati, J. R. (2002). "VizieR Online Data
Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".
3395:
71:
17:
1308:
3380:
3375:
3305:
2102:
3114:
2692:
2146:
461:
3285:
3277:
2829:
1530:"Creating and using large grids of precalculated model atmospheres for a rapid analysis of stellar spectra"
715:
688:
3370:
2697:
918:
528:
3410:
3400:
3316:
2141:
1046:
698:
It is slightly variable from magnitude 1.64 to 1.74, with no clear period, and it is classified as an
2609:
802:
540:
91:
1977:
939:
The three belt stars were collectively known by many names in many cultures. Arabic terms include
702:. Its spectrum also varies, possibly due to unpredictable changes in mass loss from the surface.
1998:
1034:
654:
3385:
3014:
2770:
2136:
1673:
1648:
532:
191:
2960:
2707:
2406:
2125:
879:
687:, this is considered typical for this type of luminous hot supergiant. It is also one of the
606:
595:
568:
522:
513:
446:
84:
1902:
1806:
1762:
1702:
1555:
1529:
1495:
1439:
1195:
1959:
1898:
1843:
1802:
1758:
1698:
1612:
1551:
1491:
1435:
1378:
1323:
1270:
1239:
1191:
986:
692:
315:
228:
2022:
8:
2889:
1674:"Light variations due to the line-driven wind instability and wind blanketing in O stars"
812:
536:
1963:
1847:
1820:
Humphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (2020-09-01).
1616:
1382:
1327:
1274:
1243:
1138:
A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their
Derivations
699:
3354:
3164:
1914:
1888:
1833:
1774:
1748:
1714:
1688:
1630:
1602:
1541:
1507:
1481:
1451:
1425:
1394:
1368:
1341:
1286:
1207:
1181:
1014:
336:
159:
3019:
2221:
2175:
2049:
1861:
1718:
1567:
1455:
1398:
1290:
1141:
963:
956:
871:
844:
599:
588:
517:
509:
482:
179:
67:
1918:
1778:
1211:
3330:
3144:
2894:
2308:
2303:
2261:
2256:
2251:
2246:
2241:
2236:
2231:
2226:
2156:
1906:
1851:
1766:
1706:
1634:
1620:
1559:
1511:
1499:
1443:
1386:
1345:
1331:
1278:
1199:
1066:
805:
677:
630:
413:
299:
98:
2069:
AEEA (Activities of
Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 25 日
2068:
1770:
1710:
1563:
1447:
2358:
2151:
2075:
1910:
1503:
1203:
934:
836:
816:
684:
670:
658:
622:
584:
426:
247:
184:
135:
1589:
Puebla, R.E.; Hillier, D.J.; Zsargó, J.; Cohen, D.H.; Leutenegger, M.A. (2015).
673:, known by many names across many ancient cultures. Alnilam is the middle star.
2268:
1856:
1821:
824:
500:
307:
287:
275:
1588:
1390:
1282:
1172:
van
Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction".
3364:
3259:
2677:
2396:
2348:
1865:
1571:
823:. Alnilam's high mass means that due to high mass loss, it will not become a
751:
591:
264:
223:
79:
1625:
1590:
1471:
3342:
3254:
3179:
3119:
2949:
2819:
2672:
2667:
2391:
2381:
2376:
2371:
2366:
2273:
2089:
1738:
848:
832:
393:
366:
42:
2935:
2353:
2343:
2338:
2333:
2328:
2323:
2318:
2313:
2213:
2094:
1893:
811:
Alnilam's relatively simple spectrum has made it useful for studying the
718:
695:. It is at its highest point in the sky around midnight on December 15.
213:
202:
148:
3249:
3244:
3174:
3169:
3109:
2930:
2925:
2920:
2854:
2849:
2844:
2839:
2662:
2657:
2652:
2647:
2642:
2637:
2632:
2599:
2594:
2589:
2584:
2579:
2574:
2569:
2564:
2559:
2554:
2549:
2544:
2539:
2534:
2529:
2524:
2519:
2514:
2509:
2504:
2499:
2494:
2489:
2484:
2479:
2474:
2469:
2464:
2459:
2454:
2449:
2444:
2439:
2434:
2429:
2424:
2386:
2298:
2293:
2288:
2183:
2090:
NASA Astronomy
Picture of the Day: Image of Alnilam (29 September 2009)
998:
828:
710:
649:
Alnilam is the middle and brightest of the three stars of Orion's Belt.
634:
626:
406:
373:
322:
235:
925:
for this star. It is now so entered in the IAU Catalog of Star Names.
2912:
2803:
2627:
2622:
2617:
2419:
2414:
2193:
1336:
1002:
820:
3228:
3223:
3218:
3213:
3208:
3159:
3129:
3104:
3099:
3083:
3078:
3073:
3068:
3063:
3058:
3053:
3048:
2998:
2993:
2988:
2983:
2978:
2973:
2968:
2884:
2879:
2869:
2864:
2798:
2793:
2788:
2783:
2778:
2760:
2755:
2745:
2740:
2735:
2730:
2725:
2720:
2715:
1838:
1693:
1607:
1546:
1430:
1373:
910:
852:
840:
489:
1753:
1527:
1486:
1186:
27:
Star in the constellation Orion, in the center of the Orion's Belt
3154:
2874:
2859:
2834:
2824:
2750:
2687:
2682:
2208:
2198:
1259:
994:
990:
681:
666:
662:
49:
3193:
3149:
3139:
3124:
3033:
2283:
1950:
Knobel, E. B. (September 1909). "The name of epsilon
Orionis".
1791:
890:
755:
733:
562:
453:
386:
327:
762:
new reduction. Adopting the larger parallax from the original
721:
for Epsilon Orionis, adapted from Krtička and Feldmeier (2018)
3134:
2278:
2188:
1010:
1006:
645:
1414:
2166:
1822:"Exploring the Mass-loss Histories of the Red Supergiants*"
856:
815:. Within the next million years, this star may turn into a
580:
291:
279:
113:
3337:
1819:
1307:
Morgan, W. W.; Keenan, Philip C.; Kellman, Edith (1943).
119:
101:
1999:"Bulletin of the IAU Working Group on Star Names, No. 1"
1140:(2nd rev. ed.). Cambridge, Massachusetts: Sky Pub.
897:'arrangement/string (of pearls)'. Related spellings are
1591:"X-ray, UV and optical analysis of supergiants: ϵ Ori"
3314:
1878:
1076:
951:('the Golden Grains or Nuts') and, in modern Arabic,
110:
657:
in the sky (the fourth brightest in Orion) and is a
116:
104:
1306:
122:
107:
3276:
1108:
859:about 20 million times more rapidly than the Sun.
2048:, written by 陳久金. Published by 台灣書房出版有限公司, 2005,
1595:Monthly Notices of the Royal Astronomical Society
1410:
1408:
3362:
1671:
629:distant. It is estimated to be 419,600 times as
1405:
1135:
959:, they were also known as the Weighing Beam.
2110:
1672:Krtička, J.; Feldmeier, A. (September 2018).
1523:
1521:
1467:
1465:
1024:
1018:
973:
967:
1033:). It is one of the western mansions of the
1232:CDS/ADC Collection of Electronic Catalogues
1171:
1167:
1165:
1163:
1161:
1159:
1157:
862:
732:, an effective temperature of 27,500 ± 100
705:
2124:
2117:
2103:
1518:
1462:
1358:
1109:{\displaystyle d=10^{{\frac {\mu }{5}}+1}}
153:−01° 12′ 06.9″
2911:
1892:
1855:
1837:
1752:
1732:
1692:
1624:
1606:
1584:
1582:
1580:
1545:
1485:
1429:
1372:
1335:
1185:
808:of 7.79 imply a distance of 361 parsecs.
70:J2000
1978:"IAU Working Group on Star Names (WGSN)"
1930:
1928:
1872:
1785:
1225:
1223:
1221:
1154:
1129:
709:
644:
2015:
1665:
1255:
1253:
271:
14:
3363:
1949:
1943:
1641:
1577:
1229:
2098:
1991:
1934:
1925:
1302:
1300:
1218:
1116:. This yields a value of 361 parsecs.
827:star, and will likely leave behind a
2059:
1970:
1250:
1136:Kunitzsch, Paul; Smart, Tim (2006).
1352:
283:
24:
2036:
1416:the massive triple star δ Ori A".
1297:
1069:of 7.79 in the following equation:
25:
3427:
2083:
843:, which it illuminates to make a
736:and a radius of 32.4 ± 0.75
3348:
3336:
3324:
3301:
3300:
1935:Allen, Richard Hinckley (1936).
955:('the Accurate Scale Beam'). In
915:International Astronomical Union
97:
48:
41:
1813:
1013:later added. Consequently, the
928:
3406:Henry Draper Catalogue objects
1059:
1031:the Second Star of Three Stars
640:
13:
1:
3391:Bright Star Catalogue objects
2147:Orion molecular cloud complex
1937:Star-names and their meanings
1309:"An Atlas of Stellar Spectra"
1123:
547: 132346, TD1 4963,
59:Location of Alnilam (circled)
1881:Astronomy & Astrophysics
1681:Astronomy & Astrophysics
1174:Astronomy & Astrophysics
7:
2023:"IAU Catalog of Star Names"
1771:10.1051/0004-6361/201014408
1711:10.1051/0004-6361/201731614
1564:10.1051/0004-6361/202038066
1448:10.1051/0004-6361/202245272
1040:
1025:
974:
919:Working Group on Star Names
306:1.65 ± 0.45
10:
3432:
2142:Orion in Chinese astronomy
1911:10.1051/0004-6361:20053685
1795:Astronomy and Astrophysics
1741:Astronomy and Astrophysics
1534:Astronomy and Astrophysics
1504:10.1051/0004-6361:20077125
1474:Astronomy and Astrophysics
1418:Astronomy and Astrophysics
1204:10.1051/0004-6361:20078357
1047:List of most massive stars
932:
773:and the mass of 64.5
669:, the three stars make up
3298:
3272:
3237:
3201:
3192:
3115:Becklin–Neugebauer Object
3092:
3041:
3032:
3007:
2959:
2948:
2907:
2812:
2769:
2706:
2608:
2405:
2174:
2165:
2132:
1391:10.1134/S1063773706110065
1283:10.1134/S1063773706090052
1030:
1019:
968:
555:
506:
499:
495:
360:
355:
351:
241:
234:
173:
64:
35:
1857:10.3847/1538-3881/abab15
1826:The Astronomical Journal
1316:Astrophysical Monographs
1052:
863:Nomenclature and history
835:. It is surrounded by a
706:Physical characteristics
3416:Stars with proper names
1903:2006A&A...446..279C
1807:1997A&A...323L..49P
1763:2010A&A...520A..51V
1703:2018A&A...617A.121K
1556:2020A&A...643A..88Z
1496:2008A&A...481..777S
1440:2023A&A...672A..31O
1196:2007A&A...474..653V
989:consisting of Alnilam,
337:Absolute magnitude
180:Evolutionary stage
160:Apparent magnitude
3396:Durchmusterung objects
3015:Lambda Orionis Cluster
2137:List of stars in Orion
2126:Constellation of Orion
1793:HIPPARCOS Catalogue".
1110:
851:may reach up to 2,000
787:), radius (30.61
722:
650:
3381:Orion (constellation)
3376:Alpha Cygni variables
3020:Trapezium Cluster (θ)
1626:10.1093/mnras/stv2783
1111:
997:(Orion's Belt), with
885:The traditional name
880:Flamsteed designation
855:, causing it to lose
794:), and mass (40
713:
648:
625:star some 1,200
621:. This is a massive,
1074:
1065:Calculated, using a
693:celestial navigation
3278:Astronomical events
1964:1909Obs....32..357K
1939:. pp. 314–315.
1848:2020AJ....160..145H
1617:2016MNRAS.456.2907P
1383:2006AstL...32..759G
1328:1943Natur.152..147.
1275:2006AstL...32..604R
1244:2002yCat.2237....0D
813:interstellar medium
655:29th-brightest star
631:luminous as the Sun
556:Database references
462:Rotational velocity
32:
3371:B-type supergiants
2074:2011-07-16 at the
1649:"GCVS Query forms"
1106:
723:
651:
501:Other designations
224:Variable type
192:Spectral type
30:
3411:Hipparcos objects
3401:Flamsteed objects
3312:
3311:
3294:
3293:
3268:
3267:
3188:
3187:
3028:
3027:
2944:
2943:
2903:
2902:
2054:978-986-7332-25-7
1361:Astronomy Letters
1263:Astronomy Letters
1147:978-1-931559-44-7
1096:
957:Chinese mythology
953:Al Mīzān al H•akk
889:derives from the
872:Bayer designation
845:reflection nebula
819:and explode as a
758:suggested by the
600:Bayer designation
574:
573:
286: −1.06
16:(Redirected from
3423:
3353:
3352:
3351:
3341:
3340:
3329:
3328:
3327:
3320:
3304:
3303:
3274:
3273:
3199:
3198:
3145:Horsehead Nebula
3039:
3038:
2957:
2956:
2909:
2908:
2172:
2171:
2119:
2112:
2105:
2096:
2095:
2078:
2067:
2063:
2057:
2044:
2040:
2034:
2033:
2031:
2029:
2019:
2013:
2012:
2010:
2008:
2003:
1995:
1989:
1988:
1986:
1984:
1974:
1968:
1967:
1947:
1941:
1940:
1932:
1923:
1922:
1896:
1894:astro-ph/0509436
1876:
1870:
1869:
1859:
1841:
1817:
1811:
1810:
1789:
1783:
1782:
1756:
1736:
1730:
1729:
1727:
1725:
1696:
1678:
1669:
1663:
1662:
1660:
1659:
1645:
1639:
1638:
1628:
1610:
1601:(3): 2907–2936.
1586:
1575:
1574:
1549:
1525:
1516:
1515:
1489:
1469:
1460:
1459:
1433:
1412:
1403:
1402:
1376:
1356:
1350:
1349:
1339:
1337:10.1038/152147a0
1313:
1304:
1295:
1294:
1257:
1248:
1247:
1227:
1216:
1215:
1189:
1169:
1152:
1151:
1133:
1117:
1115:
1113:
1112:
1107:
1105:
1104:
1097:
1089:
1067:distance modulus
1063:
1032:
1028:
1022:
1021:
977:
971:
970:
913:'. In 2016, the
806:distance modulus
700:α Cygni variable
685:absorption lines
676:Since 1943, the
661:. Together with
613:and abbreviated
526:
285:
274: 1.49
273:
174:Characteristics
169:
163:
143:
138:
129:
128:
125:
124:
121:
118:
115:
112:
109:
106:
103:
65:Observation data
52:
45:
33:
29:
21:
3431:
3430:
3426:
3425:
3424:
3422:
3421:
3420:
3361:
3360:
3359:
3349:
3347:
3335:
3325:
3323:
3315:
3313:
3308:
3290:
3264:
3233:
3184:
3165:McNeil's Nebula
3088:
3024:
3003:
2951:
2940:
2899:
2895:WISE J0521+1025
2890:WISE J0457−0207
2808:
2765:
2702:
2604:
2401:
2161:
2128:
2123:
2086:
2081:
2076:Wayback Machine
2065:
2064:
2060:
2042:
2041:
2037:
2027:
2025:
2021:
2020:
2016:
2006:
2004:
2001:
1997:
1996:
1992:
1982:
1980:
1976:
1975:
1971:
1952:The Observatory
1948:
1944:
1933:
1926:
1877:
1873:
1818:
1814:
1790:
1786:
1737:
1733:
1723:
1721:
1676:
1670:
1666:
1657:
1655:
1647:
1646:
1642:
1587:
1578:
1526:
1519:
1470:
1463:
1413:
1406:
1367:(11): 759–771.
1357:
1353:
1311:
1305:
1298:
1258:
1251:
1228:
1219:
1170:
1155:
1148:
1134:
1130:
1126:
1121:
1120:
1088:
1087:
1083:
1075:
1072:
1071:
1070:
1064:
1060:
1055:
1043:
1017:for Alnilam is
985:, refers to an
937:
931:
876:46 Orionis
865:
837:molecular cloud
817:Wolf-Rayet star
800:
797:
793:
790:
786:
783:
779:
776:
772:
769:
749:
746:
742:
739:
731:
728:
708:
659:blue supergiant
643:
633:, and 40 times
623:blue supergiant
611:Epsilon Orionis
579:is the central
551:
521:
514:46 Orionis
468: sin
427:Surface gravity
419:
416:
399:
396:
379:
376:
342:
325:
282:
253:
248:Radial velocity
185:Blue supergiant
167:
158:
141:
136:Right ascension
134:
100:
96:
66:
60:
58:
57:
56:
55:
54:
53:
28:
23:
22:
18:Epsilon Orionis
15:
12:
11:
5:
3429:
3419:
3418:
3413:
3408:
3403:
3398:
3393:
3388:
3383:
3378:
3373:
3358:
3357:
3345:
3333:
3310:
3309:
3299:
3296:
3295:
3292:
3291:
3289:
3288:
3282:
3280:
3270:
3269:
3266:
3265:
3263:
3262:
3257:
3252:
3247:
3241:
3239:
3235:
3234:
3232:
3231:
3226:
3221:
3216:
3211:
3205:
3203:
3196:
3190:
3189:
3186:
3185:
3183:
3182:
3177:
3172:
3167:
3162:
3157:
3152:
3147:
3142:
3137:
3132:
3127:
3122:
3117:
3112:
3107:
3102:
3096:
3094:
3090:
3089:
3087:
3086:
3081:
3076:
3071:
3066:
3061:
3056:
3051:
3045:
3043:
3036:
3030:
3029:
3026:
3025:
3023:
3022:
3017:
3011:
3009:
3005:
3004:
3002:
3001:
2996:
2991:
2986:
2981:
2976:
2971:
2965:
2963:
2954:
2946:
2945:
2942:
2941:
2939:
2938:
2933:
2928:
2923:
2917:
2915:
2905:
2904:
2901:
2900:
2898:
2897:
2892:
2887:
2882:
2877:
2872:
2867:
2862:
2857:
2852:
2847:
2842:
2837:
2832:
2827:
2822:
2816:
2814:
2810:
2809:
2807:
2806:
2801:
2796:
2791:
2786:
2781:
2775:
2773:
2767:
2766:
2764:
2763:
2758:
2753:
2748:
2743:
2738:
2733:
2728:
2723:
2718:
2712:
2710:
2704:
2703:
2701:
2700:
2695:
2690:
2685:
2680:
2675:
2670:
2665:
2660:
2655:
2650:
2645:
2640:
2635:
2630:
2625:
2620:
2614:
2612:
2606:
2605:
2603:
2602:
2597:
2592:
2587:
2582:
2577:
2572:
2567:
2562:
2557:
2552:
2547:
2542:
2537:
2532:
2527:
2522:
2517:
2512:
2507:
2502:
2497:
2492:
2487:
2482:
2477:
2472:
2467:
2462:
2457:
2452:
2447:
2442:
2437:
2432:
2427:
2422:
2417:
2411:
2409:
2403:
2402:
2400:
2399:
2394:
2389:
2384:
2379:
2374:
2369:
2364:
2356:
2351:
2346:
2341:
2336:
2331:
2326:
2321:
2316:
2311:
2306:
2301:
2296:
2291:
2286:
2281:
2276:
2271:
2266:
2265:
2264:
2259:
2254:
2249:
2244:
2239:
2234:
2229:
2219:
2211:
2206:
2201:
2196:
2191:
2186:
2184:α (Betelgeuse)
2180:
2178:
2169:
2163:
2162:
2160:
2159:
2154:
2149:
2144:
2139:
2133:
2130:
2129:
2122:
2121:
2114:
2107:
2099:
2093:
2092:
2085:
2084:External links
2082:
2080:
2079:
2058:
2035:
2014:
1990:
1969:
1942:
1924:
1887:(1): 279–293.
1871:
1812:
1784:
1731:
1664:
1653:www.sai.msu.su
1640:
1576:
1517:
1461:
1404:
1351:
1296:
1269:(9): 604–607.
1249:
1217:
1180:(2): 653–664.
1153:
1146:
1127:
1125:
1122:
1119:
1118:
1103:
1100:
1095:
1092:
1086:
1082:
1079:
1057:
1056:
1054:
1051:
1050:
1049:
1042:
1039:
947:('the Line'),
943:('the Belt'),
933:Main article:
930:
927:
870:is the star's
864:
861:
825:red supergiant
798:
795:
791:
788:
784:
781:
777:
774:
770:
767:
747:
744:
740:
737:
729:
726:
707:
704:
642:
639:
572:
571:
566:
558:
557:
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552:
507:
504:
503:
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457:
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397:
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348:
345:
340:
332:
331:
319:
311:
310:
304:
295:
294:
269:
260:
259:
258:25.9 km/s
256:
251:
243:
242:
239:
238:
232:
231:
226:
220:
219:
216:
209:
208:
205:
198:
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194:
188:
187:
182:
176:
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155:
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145:
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94:
88:
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82:
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75:
62:
61:
47:
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40:
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36:
26:
9:
6:
4:
3:
2:
3428:
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3414:
3412:
3409:
3407:
3404:
3402:
3399:
3397:
3394:
3392:
3389:
3387:
3386:Bayer objects
3384:
3382:
3379:
3377:
3374:
3372:
3369:
3368:
3366:
3356:
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3344:
3339:
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3318:
3307:
3297:
3287:
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3258:
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3253:
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3236:
3230:
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3207:
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3141:
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3006:
3000:
2997:
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2992:
2990:
2987:
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2797:
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2762:
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2734:
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2714:
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2711:
2709:
2705:
2699:
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2694:
2691:
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2684:
2681:
2679:
2676:
2674:
2671:
2669:
2666:
2664:
2661:
2659:
2656:
2654:
2651:
2649:
2646:
2644:
2641:
2639:
2636:
2634:
2631:
2629:
2626:
2624:
2621:
2619:
2616:
2615:
2613:
2611:
2607:
2601:
2598:
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2583:
2581:
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2523:
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2496:
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2436:
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2428:
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2423:
2421:
2418:
2416:
2413:
2412:
2410:
2408:
2404:
2398:
2395:
2393:
2390:
2388:
2385:
2383:
2380:
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2375:
2373:
2370:
2368:
2365:
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2357:
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2332:
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2327:
2325:
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2320:
2317:
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2312:
2310:
2307:
2305:
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2300:
2297:
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2287:
2285:
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2280:
2277:
2275:
2272:
2270:
2267:
2263:
2260:
2258:
2255:
2253:
2250:
2248:
2245:
2243:
2240:
2238:
2235:
2233:
2230:
2228:
2225:
2224:
2223:
2220:
2218:
2217:
2212:
2210:
2207:
2205:
2202:
2200:
2197:
2195:
2194:γ (Bellatrix)
2192:
2190:
2187:
2185:
2182:
2181:
2179:
2177:
2173:
2170:
2168:
2164:
2158:
2157:Orion's Sword
2155:
2153:
2150:
2148:
2145:
2143:
2140:
2138:
2135:
2134:
2131:
2127:
2120:
2115:
2113:
2108:
2106:
2101:
2100:
2097:
2091:
2088:
2087:
2077:
2073:
2070:
2062:
2055:
2051:
2047:
2039:
2024:
2018:
2000:
1994:
1979:
1973:
1965:
1961:
1957:
1953:
1946:
1938:
1931:
1929:
1920:
1916:
1912:
1908:
1904:
1900:
1895:
1890:
1886:
1882:
1875:
1867:
1863:
1858:
1853:
1849:
1845:
1840:
1835:
1831:
1827:
1823:
1816:
1808:
1804:
1800:
1796:
1788:
1780:
1776:
1772:
1768:
1764:
1760:
1755:
1750:
1746:
1742:
1735:
1720:
1716:
1712:
1708:
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1700:
1695:
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1686:
1682:
1675:
1668:
1654:
1650:
1644:
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1632:
1627:
1622:
1618:
1614:
1609:
1604:
1600:
1596:
1592:
1585:
1583:
1581:
1573:
1569:
1565:
1561:
1557:
1553:
1548:
1543:
1539:
1535:
1531:
1524:
1522:
1513:
1509:
1505:
1501:
1497:
1493:
1488:
1483:
1480:(3): 777–97.
1479:
1475:
1468:
1466:
1457:
1453:
1449:
1445:
1441:
1437:
1432:
1427:
1423:
1419:
1411:
1409:
1400:
1396:
1392:
1388:
1384:
1380:
1375:
1370:
1366:
1362:
1355:
1347:
1343:
1338:
1333:
1329:
1325:
1322:(3849): 147.
1321:
1317:
1310:
1303:
1301:
1292:
1288:
1284:
1280:
1276:
1272:
1268:
1264:
1256:
1254:
1245:
1241:
1237:
1233:
1226:
1224:
1222:
1213:
1209:
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1201:
1197:
1193:
1188:
1183:
1179:
1175:
1168:
1166:
1164:
1162:
1160:
1158:
1149:
1143:
1139:
1132:
1128:
1101:
1098:
1093:
1090:
1084:
1080:
1077:
1068:
1062:
1058:
1048:
1045:
1044:
1038:
1036:
1027:
1016:
1012:
1008:
1004:
1000:
996:
992:
988:
984:
982:
976:
965:
960:
958:
954:
950:
946:
942:
936:
926:
924:
920:
916:
912:
908:
904:
900:
896:
892:
888:
883:
881:
877:
873:
869:
860:
858:
854:
850:
849:stellar winds
846:
842:
838:
834:
831:instead of a
830:
826:
822:
818:
814:
809:
807:
804:
803:spectroscopic
765:
761:
757:
753:
752:main sequence
735:
720:
717:
712:
703:
701:
696:
694:
690:
689:58 stars
686:
683:
679:
674:
672:
668:
664:
660:
656:
647:
638:
636:
632:
628:
624:
620:
616:
612:
608:
604:
601:
598:. It has the
597:
593:
592:constellation
590:
586:
582:
578:
570:
567:
565:
564:
560:
559:
554:
550:
546:
542:
539: 26311,
538:
535: 37128,
534:
530:
524:
519:
515:
511:
505:
502:
498:
494:
491:
487:
485:
484:
480:
479:
475:
473:
471:
467:
463:
459:
458:
455:
451:
449:
448:
444:
443:
440:
436:
434:
432:
428:
424:
423:
420:
412:419,600
411:
409:
408:
404:
403:
400:
391:
389:
388:
384:
383:
380:
371:
369:
368:
364:
363:
359:
354:
350:
346:
344:
338:
334:
333:
329:
324:
320:
318:
317:
313:
312:
309:
305:
303:
301:
297:
296:
293:
289:
281:
277:
270:
268:
266:
265:Proper motion
262:
261:
257:
255:
249:
245:
244:
240:
237:
233:
230:
227:
225:
222:
221:
217:
215:
211:
210:
206:
204:
200:
199:
195:
193:
190:
189:
186:
183:
181:
178:
177:
172:
168:(1.64 – 1.74)
165:
161:
157:
156:
152:
150:
147:
146:
140:
137:
133:
132:
127:
95:
93:
92:Pronunciation
90:
89:
86:
83:
81:
80:Constellation
78:
77:
73:
69:
63:
51:
44:
34:
19:
3260:TXS 0506+056
3255:II Zwicky 28
3180:Orion Nebula
3120:Flame Nebula
2360:
2215:
2203:
2152:Orion's Belt
2066:(in Chinese)
2061:
2045:
2043:(in Chinese)
2038:
2026:. Retrieved
2017:
2005:. Retrieved
1993:
1981:. Retrieved
1972:
1955:
1951:
1945:
1936:
1884:
1880:
1874:
1829:
1825:
1815:
1798:
1794:
1787:
1744:
1740:
1734:
1722:. Retrieved
1684:
1680:
1667:
1656:. Retrieved
1652:
1643:
1598:
1594:
1537:
1533:
1477:
1473:
1421:
1417:
1364:
1360:
1354:
1319:
1315:
1266:
1262:
1235:
1231:
1177:
1173:
1137:
1131:
1061:
1015:Chinese name
979:
961:
952:
948:
944:
940:
938:
935:Orion's Belt
929:Orion's Belt
922:
917:organized a
906:
902:
898:
894:
886:
884:
875:
867:
866:
833:neutron star
810:
763:
759:
724:
697:
675:
671:Orion's Belt
652:
618:
614:
610:
602:
585:Orion's Belt
576:
575:
561:
543: 1903,
481:
476:80 km/s
469:
465:
460:
452:26,540
445:
430:
425:
405:
385:
365:
335:
314:
298:
263:
246:
3355:Outer space
2936:HD 290327 b
2820:4U 0614+091
2209:ζ (Alnitak)
2204:ε (Alnilam)
2199:δ (Mintaka)
1035:White Tiger
1029:, English:
981:Three Stars
978:), meaning
801:). Another
719:light curve
641:Observation
627:light-years
615:Epsilon Ori
605:, which is
531: 210,
447:Temperature
392:30.62
321:1,180
214:color index
203:color index
196:B0 Ia
149:Declination
3365:Categories
3286:GRB 991216
3250:CGCG 396-2
3175:Messier 78
3170:Messier 43
3110:Barnard 30
2931:HD 38529 b
2926:HD 37605 b
2921:HD 34445 b
2913:Exoplanets
2855:Gliese 221
2850:Gliese 208
2845:Gliese 205
2840:Gliese 179
2830:GRB 991216
2284:λ (Meissa)
2274:ι (Hatysa)
2216:(Algjebba)
1839:2008.01108
1832:(3): 145.
1694:1807.09407
1658:2019-01-12
1608:1511.09365
1547:2009.10879
1431:2301.10290
1374:1606.08053
1124:References
1026:Shēn Sù èr
999:Betelgeuse
983:(asterism)
829:black hole
653:It is the
635:as massive
589:equatorial
510:ε Ori
488:4.47
437:3.02
429:(log
407:Luminosity
326:(361
236:Astrometry
142:05 36 12.8
3331:Astronomy
3245:4C +09.17
2407:Flamsteed
2324:π (Tabit)
2279:κ (Saiph)
2189:β (Rigel)
1866:0004-6256
1754:1005.3827
1724:11 August
1719:119388848
1572:0004-6361
1487:0801.4289
1456:256226821
1399:119231169
1291:121747360
1187:0708.1752
1091:μ
1003:Bellatrix
868:ε Orionis
821:supernova
764:Hipparcos
760:Hipparcos
716:blue band
607:Latinised
603:ε Orionis
508:Alnilam,
162: (V)
3306:Category
3194:Galaxies
3160:LDN 1641
3130:HH 24-26
3105:Abell 13
3100:Abell 12
2952:clusters
2885:S Ori 70
2880:S Ori 52
2870:LP 658-2
2865:HOPS 383
2610:Variable
2361:(Thabit)
2072:Archived
1919:18815761
1779:38599952
1687:: A121.
1212:18759600
1041:See also
987:asterism
949:Al Alkāt
945:Al Nasak
941:Al Nijād
911:sapphire
907:al-nilam
895:al-niẓām
841:NGC 1990
799:☉
792:☉
785:☉
778:☉
771:☉
748:☉
741:☉
730:☉
691:used in
678:spectrum
418:☉
398:☉
378:☉
372:40
339: (M
316:Distance
300:Parallax
31:Alnilam
3317:Portals
3155:IC 2118
3034:Nebulae
2875:PDS 110
2860:GJ 3379
2835:G 99-47
2825:CVSO 30
2028:28 July
2007:28 July
1960:Bibcode
1958:: 357.
1899:Bibcode
1844:Bibcode
1803:Bibcode
1801:: L49.
1759:Bibcode
1699:Bibcode
1635:7887625
1613:Bibcode
1552:Bibcode
1540:: A88,
1512:1552752
1492:Bibcode
1436:Bibcode
1424:: A31.
1379:Bibcode
1346:4109100
1324:Bibcode
1271:Bibcode
1240:Bibcode
1192:Bibcode
995:Mintaka
991:Alnitak
975:Shēn Sù
964:Chinese
923:Alnilam
903:Alnitam
899:Alnihan
893:النظام
887:Alnilam
756:parsecs
750:on the
682:H-alpha
667:Alnitak
663:Mintaka
587:in the
577:Alnilam
525:−01°969
518:Orionis
356:Details
229:α Cygni
72:Equinox
3150:IC 434
3140:HH 111
3125:HH 1/2
2804:290327
2600:75 (l)
2595:74 (k)
2585:72 (f)
2575:69 (f)
2520:51 (b)
2515:49 (d)
2505:42 (c)
2485:32 (A)
2475:29 (e)
2470:27 (p)
2465:23 (m)
2460:22 (o)
2445:16 (h)
2435:14 (i)
2052:
2046:中國星座神話
1983:22 May
1917:
1864:
1781:. A51.
1777:
1747:: 10.
1717:
1633:
1570:
1510:
1454:
1397:
1344:
1289:
1210:
1144:
891:Arabic
847:. Its
563:SIMBAD
387:Radius
218:−0.18
207:−1.03
74:J2000
3343:Stars
3238:Other
3135:HH 34
3093:Other
3008:Other
2813:Other
2799:42618
2794:37605
2789:37320
2784:34445
2779:33636
2698:V2384
2693:V2254
2688:V1352
2683:V1201
2678:V1005
2420:6 (g)
2176:Bayer
2167:Stars
2002:(PDF)
1915:S2CID
1889:arXiv
1834:arXiv
1775:S2CID
1749:arXiv
1715:S2CID
1689:arXiv
1677:(PDF)
1631:S2CID
1603:arXiv
1542:arXiv
1508:S2CID
1482:arXiv
1452:S2CID
1426:arXiv
1395:S2CID
1369:arXiv
1342:S2CID
1312:(PDF)
1287:S2CID
1208:S2CID
1182:arXiv
1053:Notes
1011:Rigel
1007:Saiph
619:ε Ori
596:Orion
347:−6.89
284:Dec.:
166:1.69
85:Orion
68:Epoch
3229:2119
3224:2110
3219:1924
3214:1819
3209:1683
3084:2174
3079:2071
3074:2067
3069:2064
3064:2023
3059:2022
3054:1999
3049:1788
2999:2202
2994:2194
2989:2175
2984:2169
2979:1981
2974:1980
2969:1662
2950:Star
2761:2275
2756:2251
2751:2024
2746:2007
2741:1988
2736:1952
2731:1887
2726:1874
2721:1763
2716:1759
2673:V883
2668:V380
2050:ISBN
2030:2016
2009:2016
1985:2016
1862:ISSN
1726:2022
1568:ISSN
1236:2237
1142:ISBN
1009:and
993:and
901:and
878:its
874:and
857:mass
853:km/s
665:and
581:star
569:data
367:Mass
212:B−V
201:U−B
3202:NGC
3042:NGC
2961:NGC
1907:doi
1885:446
1852:doi
1830:160
1799:323
1767:doi
1745:520
1707:doi
1685:617
1621:doi
1599:456
1560:doi
1538:643
1500:doi
1478:481
1444:doi
1422:672
1387:doi
1332:doi
1320:152
1279:doi
1200:doi
1178:474
1020:參宿二
962:In
617:or
609:to
594:of
583:of
549:參宿二
545:SAO
537:HIP
529:FK5
490:Myr
483:Age
439:cgs
308:mas
302:(π)
288:mas
276:mas
272:RA:
267:(μ)
3367::
2771:HD
2708:HR
2663:GW
2658:FU
2653:DN
2648:BM
2643:BF
2638:VV
2633:UX
2590:73
2580:71
2570:68
2565:66
2560:64
2555:63
2550:60
2545:59
2540:57
2535:56
2530:55
2525:52
2510:45
2500:38
2495:35
2490:33
2480:31
2455:21
2450:18
2440:15
2430:13
2425:11
2359:υ
2214:η
1956:32
1954:.
1927:^
1913:.
1905:.
1897:.
1883:.
1860:.
1850:.
1842:.
1828:.
1824:.
1797:.
1773:.
1765:.
1757:.
1743:.
1713:.
1705:.
1697:.
1683:.
1679:.
1651:.
1629:.
1619:.
1611:.
1597:.
1593:.
1579:^
1566:,
1558:,
1550:,
1536:,
1532:,
1520:^
1506:.
1498:.
1490:.
1476:.
1464:^
1450:.
1442:.
1434:.
1420:.
1407:^
1393:.
1385:.
1377:.
1365:32
1363:.
1340:.
1330:.
1318:.
1314:.
1299:^
1285:.
1277:.
1267:32
1265:.
1252:^
1238:.
1234:.
1220:^
1206:.
1198:.
1190:.
1176:.
1156:^
1085:10
1037:.
1005:,
1001:,
969:參宿
966:,
882:.
839:,
714:A
637:.
541:HR
533:HD
527:,
523:BD
520:,
516:,
512:,
328:pc
323:ly
292:yr
280:yr
250:(R
114:aɪ
3319::
2628:W
2623:U
2618:S
2415:5
2397:ω
2392:ψ
2387:ψ
2382:χ
2377:χ
2372:φ
2367:φ
2354:τ
2349:σ
2344:ρ
2339:π
2334:π
2329:π
2319:π
2314:π
2309:ο
2304:ο
2299:ξ
2294:ν
2289:μ
2269:θ
2262:H
2257:G
2252:F
2247:E
2242:D
2237:C
2232:B
2227:A
2222:θ
2118:e
2111:t
2104:v
2056:.
2032:.
2011:.
1987:.
1966:.
1962::
1921:.
1909::
1901::
1891::
1868:.
1854::
1846::
1836::
1809:.
1805::
1769::
1761::
1751::
1728:.
1709::
1701::
1691::
1661:.
1637:.
1623::
1615::
1605::
1562::
1554::
1544::
1514:.
1502::
1494::
1484::
1458:.
1446::
1438::
1428::
1401:.
1389::
1381::
1371::
1348:.
1334::
1326::
1293:.
1281::
1273::
1246:.
1242::
1214:.
1202::
1194::
1184::
1150:.
1102:1
1099:+
1094:5
1081:=
1078:d
1023:(
972:(
909:'
796:M
789:R
782:L
775:M
768:L
745:M
738:R
734:K
727:L
472:)
470:i
466:v
464:(
454:K
433:)
431:g
415:L
395:R
375:M
343:)
341:V
330:)
290:/
278:/
254:)
252:v
126:/
123:m
120:æ
117:l
111:n
108:ˈ
105:l
102:æ
99:/
20:)
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