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Classical Kuiper belt object

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2554: 523: 20: 2560: 413: 619:. Furthermore, there is evidence that the Kuiper belt has an 'edge', in that an apparent lack of low-inclination objects beyond 47–49 AU was suspected as early as 1998 and shown with more data in 2001. Consequently, the traditional usage of the terms is based on the orbit's semi-major axis, and includes objects situated between the 2:3 and 1:2 resonances, that is between 39.4 and 47.8 AU (with exclusion of these resonances and the minor ones in-between). 3523: 514: 575:. Binaries are quite common on low-inclination orbits and are typically similar-brightness systems. Binaries are less common on high-inclination orbits and their components typically differ in brightness. This correlation, together with the differences in colour, support further the suggestion that the currently observed classical objects belong to at least two different overlapping populations, with different physical properties and orbital history. 3561: 804: 3585: 3549: 3573: 35: 568:, and more heterogeneous hot population was observed as early as in 2002. Recent studies, based on a larger data set, indicate the cut-off inclination of 12° (instead of 5°) between the cold and hot populations and confirm the distinction between the homogenous red cold population and the bluish hot population. 492:
The vast majority of KBOs (more than two-thirds) have inclinations of less than 5° and eccentricities of less than 0.1 . Their semi-major axes show a preference for the middle of the main belt; arguably, smaller objects close to the limiting resonances have been either captured into resonance or
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When the orbital eccentricities of cubewanos and plutinos are compared, it can be seen that the cubewanos form a clear 'belt' outside Neptune's orbit, whereas the plutinos approach, or even cross Neptune's orbit. When orbital inclinations are compared, 'hot' cubewanos can be easily distinguished by
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The 'hot' and 'cold' populations are strikingly different: more than 30% of all cubewanos are in low inclination, near-circular orbits. The parameters of the plutinos’ orbits are more evenly distributed, with a local maximum in moderate eccentricities in 0.15–0.2 range, and low inclinations 5–10°.
469:) is characterised by highly inclined, more eccentric orbits. The terms 'hot' and 'cold' has nothing to do with surface or internal temperatures, but rather refer to the orbits of the objects, by analogy to molecules in a gas, which increase their relative velocity as they heat up. 638:
by J. L. Elliott et al. in 2005 uses formal criteria based on the mean orbital parameters. Put informally, the definition includes the objects that have never crossed the orbit of Neptune. According to this definition, an object qualifies as a classical KBO if:
284:, which until January 2018 had only the provisional designation (15760) 1992 QB1. Similar objects found later were often called "QB1-o's", or "cubewanos", after this object, though the term "classical" is much more frequently used in the scientific literature. 583:
There is no official definition of 'cubewano' or 'classical KBO'. However, the terms are normally used to refer to objects free from significant perturbation from Neptune, thereby excluding KBOs in orbital resonance with Neptune
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and C. van Laerhoven in 2007, uses a 10-million-year orbit integration instead of the Tisserand's parameter. Classical objects are defined as not resonant and not being currently scattered by Neptune.
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K. Noll; W. Grundy; D. Stephens; H. Levison; S. Kern (April 2008). "Evidence for two populations of classical transneptunian objects: The strong inclination dependence of classical binaries".
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and seven smaller bodies. The objects not only follow similar orbits but also share similar physical characteristics. Unlike many other KBO their surface contains large amounts of water ice (H
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There are two basic dynamical classes of classical Kuiper-belt bodies: those with relatively unperturbed ('cold') orbits, and those with markedly perturbed ('hot') orbits.
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A. Doressoundiram; N. Peixinho; C. de Bergh; S. Fornasier; P. Thebault; M. A. Barucci; C. Veillet (October 2002). "The Color Distribution in the Edgeworth-Kuiper Belt".
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their higher inclinations, as the plutinos typically keep orbits below 20°. (No clear explanation currently exists for the inclinations of 'hot' cubewanos.)
1425: 1523:"The Deep Ecliptic Survey: A Search for Kuiper Belt Objects and Centaurs. II. Dynamical Classification, the Kuiper Belt Plane, and the Core Population" 2146: 1465:
Levison, Harold F.; Morbidelli, Alessandro (2003). "The formation of the Kuiper belt by the outward transport of bodies during Neptune's migration".
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have a semi-major axis greater than that of Neptune (30.1 AU; i.e. excluding centaurs) but less than 2000 AU (to exclude inner-Oort-cloud objects)
1951: 596:(DES) do not list cubewanos (classical objects) using the same criteria. Many TNOs classified as cubewanos by the MPC, such as dwarf planet 1405: 164: 27: 689: 1968:
Pinilla-Alonso, N.; Brunetto, R.; Licandro, J.; Gil-Hutton, R.; Roush, T. L.; Strazzulla, G. (2009). "The surface of (136108) Haumea (
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spacecraft has visited the small KBO 486958 Arrokoth at a distance of 3,500 kilometres (2,200 mi) on 1 January 2019.
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Another difference between the low-inclination (cold) and high-inclination (hot) classical objects is the observed number of
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Here is a very generic list of classical Kuiper belt objects. As of July 2023, there are about 870 objects with
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Unlike other schemes, this definition includes the objects with major semi-axis less than 39.4 AU (2:3 resonance)—termed
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Somewhat old-fashioned, but "cubewano" is still used by the Minor Planet Center for their list of Distant Minor Planets.
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Pinilla-Alonso, N.; Licandro, J.; Gil-Hutton, R.; Brunetto, R. (2007). "The water ice rich surface of (145453) 2005 RR
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In addition to the distinct orbital characteristics, the two populations display different physical characteristics.
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in the classical Kuiper belt—a group of objects thought to be remnants from the breakup of a single body—is the
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remains blurred. As of 2023, there are 870 objects with perihelion (q) > 40 AU and aphelion (Q) < 48 AU.
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As of January 2019, only one classical Kuiper belt object has been observed up close by spacecraft. Both
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Comparison of the aligned orbits (polar and ecliptic view) of cubewanos, plutinos, and Neptune (yellow).
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These definitions lack precision: in particular the boundary between the classical objects and the
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reports the distributions of the two populations; one with the inclination centered at 4.6° (named
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was the first mission to visit a classical KBO. After its successful exploration of the
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Brown, Michael E.; Barkume, Kristina M.; Ragozzine, Darin; Schaller, Emily L. (2007).
1376: 1353:. IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Archived from 3133: 3123: 3008: 2865: 2855: 2487: 1935: 1876: 1492: 1429: 1204: 1163: 1141: 1078: 1042: 866: 435: 371: 338: 254: 2187: 2126: 2071: 2014: 1700: 1643: 1590: 1379:. IAU Minor Planet Center & Tamkin Foundation Computer Network. 12 December 2006 3553: 3117: 2988: 2885: 2725: 2622: 2444: 2411: 2173: 2114: 2059: 2002: 1947: 1927: 1803: 1791: 1741: 1688: 1631: 1603: 1544: 1504: 1484: 1467: 1233: 1216: 1180: 1013: 996: 984: 670: 666: 195: 2285: 2006: 1865: 1753: 1661:(August 2008). "Color-inclination relation of the classical Kuiper belt objects". 1564: 19: 3416: 2559: 2534: 2520: 2468: 2063: 1745: 1111: 1089: 812: 572: 565: 382: 324: 250: 128: 23: 2085:
Chiang, E.-I. (July 2002). "A Collisional Family in the Classical Kuiper Belt".
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As of 2008. The four brightest objects of the family are situated on the graphs
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Solar System Update : Topical and Timely Reviews in Solar System Sciences
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de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (11 February 2018).
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have passed through the region before the discovery of the Kuiper belt.
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Kuiper belt object, not controlled by an orbital resonance with Neptune
2139: 513: 3400: 3388: 3376: 3364: 3215: 3038: 2955: 2745: 2583: 2506: 1713: 556: 2473: 1975:), the largest carbon-depleted object in the trans-Neptunian belt". 2481: 2376: 2298:"Plot of the current positions of bodies in the Outer Solar System" 2203:"The PI's Perspective: Why Didn't Voyager Explore the Kuiper Belt?" 2160: 2118: 1795: 1635: 1549: 1522: 807:
New Horizons trajectory and the orbits of Pluto and 486958 Arrokoth
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The difference in colour between the red cold population, such as
3489: 3259: 2656: 2388: 2371: 616: 543: 451: 439: 242: 133: 94: 39: 2311: 2501: 2495: 2462: 2142:"Dynamically correlated minor bodies in the outer Solar system" 781: 388: 210: 2438: 2276:, Harvard-Smithsonian Center for Astrophysics, archived from 1902: 820: 258: 238: 43: 204: 34: 1863: 824: 225: 1859: 1857: 1351:"MPEC 2010-B62: Distant Minor Planets (2010 FEB. 13.0 TT)" 313:, each considered the largest TNO at the time of discovery 2225:"New Horizons prepares for encounter with 2014 MU69" 219: 38:
The orbits of various cubewanos compared to the orbit of
1905:"A collisional family of icy objects in the Kuiper belt" 1864:
Gladman, B. J.; Marsden, B.; van Laerhoven, C. (2008).
1854: 1707: 402: 261:, do not cross Neptune's orbit. That is, they have low- 480:) and another with inclinations extending beyond 30° ( 446:, for example, has a near-circular orbit close to the 3537: 2032:: a case for a carbon-depleted population of TNOs?". 1656: 707: 222: 216: 201: 198: 1396: 1394: 207: 213: 2021: 1961: 1597: 719: 557:Cold and hot populations: physical characteristics 2147:Monthly Notices of the Royal Astronomical Society 1767:Trujillo, Chadwick A.; Brown, Michael E. (2001). 1650: 1464: 1391: 457:The majority of classical objects, the so-called 3597: 1896: 1516: 1514: 1348: 294:(aka 1992 QB1 and gave rise to term 'Cubewano') 2304:. Harvard-Smithsonian Center for Astrophysics. 1400: 391:was provisionally listed as a cubewano by the 2327: 1842:. Harvard-Smithsonian Center for Astrophysics 1766: 1760: 1511: 749:for the orbits between these two resonances. 737:, or more than 48.7 (1:2 resonance) – termed 665:An alternative classification, introduced by 578: 165: 1769:"The Radial Distribution of the Kuiper Belt" 1520: 1822: 1820: 837:List of trans-Neptunian objects § List 272:The name "cubewano" derives from the first 2558: 2552: 2334: 2320: 2222: 1458: 656:its average eccentricity is less than 0.2. 172: 158: 2177: 2159: 2100: 2045: 1988: 1871:. In Barucci, M. A.; et al. (eds.). 1727: 1674: 1617: 1548: 434:Most cubewanos are found between the 2:3 287:Objects identified as cubewanos include: 26:, the first classical Kuiper belt object 1866:"Nomenclature in the Outer Solar System" 1817: 1344: 1342: 1340: 1338: 802: 660: 411: 395:in 2006, but was later found to be in a 33: 18: 2262:"The Kuiper Belt Electronic Newsletter" 1875:. Tucson: University of Arizona Press. 600:, are classified as ScatNear (possibly 493:have their orbits modified by Neptune. 3598: 2084: 2078: 1581: 1377:"MPEC 2006-X45: Distant Minor Planets" 676:Formally, this definition includes as 534:TNO distribution of cubewanos (blue), 2315: 2223:Lakdawalla, Emily (24 January 2018). 2200: 2133: 1406:"The Solar System Beyond The Planets" 1369: 1335: 629: 461:, have low inclinations (< 5 1349:Brian G. Marsden (30 January 2010). 835:For a more comprehensive list, see 300:, the largest known cubewano and a 269:orbits like the classical planets. 13: 2248: 1521:J. L. Elliot; et al. (2006). 1315: 698:are not being scattered by Neptune 634:Introduced by the report from the 615:may be an inner cubewano near the 14: 3617: 2341: 2270:"List of Trans-Neptunian objects" 2242: 765:. It includes Haumea, its moons, 653:with respect to Neptune exceeds 3 3583: 3571: 3559: 3547: 3522: 3521: 2201:Stern, Alan (28 February 2018). 1957:from the original on 2018-07-23. 1892:from the original on 2012-11-02. 1657:Peixinho, Nuno; Lacerda, Pedro; 586:resonant trans-Neptunian objects 521: 512: 423:of cubewanos (blue) compared to 233:"QB1-o"), is a low-eccentricity 194: 2216: 2194: 1873:The Solar System Beyond Neptune 1321:"Classical Kuiper Belt Objects" 1283:the circle representing Haumea. 1273: 487: 2354:List of possible dwarf planets 1575: 1309: 1295: 1264: 798: 408:: 'hot' and 'cold' populations 247:orbital resonance with Neptune 124:Extreme trans-Neptunian object 1: 3606:Classical Kuiper belt objects 1289: 1253:Lists of astronomical objects 727:(to exclude detached objects) 497:See also the comparison with 249:. Cubewanos have orbits with 1746:10.1016/j.icarus.2007.10.022 1693:10.1088/0004-6256/136/5/1837 1258: 276:(TNO) found after Pluto and 245:and is not controlled by an 186:classical Kuiper belt object 7: 2300:. IAU Minor Planet Center. 2272:, IAU Minor Planet Center, 2007:10.1051/0004-6361/200809733 1838:. IAU Minor Planet Center. 1246: 752: 438:with Neptune (populated by 10: 3622: 2064:10.1051/0004-6361:20077294 2034:Astronomy and Astrophysics 1977:Astronomy and Astrophysics 834: 720:{\displaystyle e<0.240} 688:are non-resonant (see the 579:Toward a formal definition 3517: 3488: 3415: 3103: 2970: 2783: 2760: 2655: 2597: 2574: 2567: 2550: 2397: 2349: 2088:The Astrophysical Journal 1776:The Astrophysical Journal 780:O) and no or very little 442:) and the 1:2 resonance. 1663:The Astronomical Journal 1606:The Astronomical Journal 743:, and reserves the term 701:have their eccentricity 690:definition of the method 604:by Neptune) by the DES. 2056:2007A&A...468L..25P 1999:2009A&A...496..547P 1404:; Delsanti, A. (2006). 1303:"Distant Minor Planets" 830: 680:all objects with their 72:Trans-Neptunian objects 28:visited by a spacecraft 808: 721: 499:scattered disk objects 428: 274:trans-Neptunian object 111:Scattered disc objects 47: 31: 2358:Former dwarf planets 2302:minorplanetcenter.org 2274:minorplanetcenter.org 2179:10.1093/mnras/stx2765 1840:minorplanetcenter.net 1813:on 19 September 2006. 806: 722: 661:SSBN07 classification 651:Tisserand's parameter 415: 53:distant minor planets 37: 22: 1528:Astronomical Journal 1228:88611 Teharonhiawako 823:system in 2015, the 740:outer classical belt 734:inner classical belt 705: 636:Deep Ecliptic Survey 594:Deep Ecliptic Survey 474:Deep Ecliptic Survey 333:88611 Teharonhiawako 2290:johnstonarchive.net 2227:. Planetary Society 2170:2018MNRAS.474..838D 2111:2002ApJ...573L..65C 1932:10.1038/nature05619 1924:2007Natur.446..294B 1788:2001ApJ...554L..95T 1738:2008Icar..194..758N 1685:2008AJ....136.1837P 1628:2002AJ....124.2279D 1541:2005AJ....129.1117E 1489:10.1038/nature02120 1481:2003Natur.426..419L 1357:on 4 September 2012 746:main classical belt 590:Minor Planet Center 393:Minor Planet Center 78:Kuiper belt objects 55: 2254:"Kuiper belt site" 1570:on 23 August 2006. 1445:on 29 January 2007 813:Voyager spacecraft 809: 759:collisional family 717: 630:DES classification 429: 265:and sometimes low- 257:range and, unlike 253:in the 40–50  237:object (KBO) that 143:Oort cloud objects 50: 48: 32: 3535: 3534: 3513: 3512: 2280:on 27 August 2010 1882:978-0-8165-2755-7 1593:on 19 April 2007. 1475:(6965): 419–421. 1435:978-3-540-26056-1 436:orbital resonance 182: 181: 3613: 3588: 3587: 3586: 3576: 3575: 3574: 3564: 3563: 3562: 3552: 3551: 3550: 3543: 3525: 3524: 3506: 3504: 3503: 3481: 3471: 3461: 3451: 3441: 3431: 3417:Detached objects 3408: 3406: 3405: 3396: 3394: 3393: 3384: 3382: 3381: 3372: 3370: 3369: 3360: 3358: 3357: 3348: 3346: 3345: 3336: 3334: 3333: 3324: 3314: 3312: 3311: 3302: 3292: 3282: 3272: 3262: 3255: 3253: 3252: 3243: 3233: 3223: 3221: 3220: 3211: 3201: 3199: 3198: 3189: 3179: 3169: 3159: 3149: 3139: 3129: 3096: 3086: 3076: 3066: 3056: 3046: 3044: 3043: 3034: 3024: 3014: 3004: 2994: 2984: 2963: 2961: 2960: 2951: 2941: 2931: 2921: 2911: 2901: 2891: 2881: 2871: 2861: 2851: 2841: 2839: 2838: 2829: 2819: 2776: 2753: 2751: 2750: 2741: 2731: 2721: 2711: 2701: 2691: 2681: 2648: 2638: 2628: 2572: 2571: 2562: 2556: 2336: 2329: 2322: 2313: 2312: 2305: 2293: 2281: 2265: 2257: 2237: 2236: 2234: 2232: 2220: 2214: 2213: 2211: 2209: 2198: 2192: 2191: 2181: 2163: 2137: 2131: 2130: 2104: 2102:astro-ph/0205275 2082: 2076: 2075: 2049: 2047:astro-ph/0703098 2025: 2019: 2018: 1992: 1974: 1965: 1959: 1958: 1956: 1909: 1900: 1894: 1893: 1891: 1870: 1861: 1852: 1851: 1849: 1847: 1835: 1831: 1824: 1815: 1814: 1812: 1806:. Archived from 1773: 1764: 1758: 1757: 1731: 1711: 1705: 1704: 1678: 1654: 1648: 1647: 1621: 1619:astro-ph/0206468 1601: 1595: 1594: 1589:. Archived from 1579: 1573: 1571: 1569: 1563:. Archived from 1562: 1554: 1552: 1535:(2): 1117–1162. 1518: 1509: 1508: 1462: 1456: 1454: 1452: 1450: 1444: 1438:. Archived from 1419: 1410: 1398: 1389: 1388: 1386: 1384: 1373: 1367: 1366: 1364: 1362: 1346: 1333: 1332: 1330: 1328: 1313: 1307: 1306: 1299: 1284: 1277: 1271: 1268: 1241: 1239: 1238: 1224: 1222: 1221: 1212: 1210: 1209: 1200: 1198: 1197: 1188: 1186: 1185: 1175:79360 Sila–Nunam 1171: 1169: 1168: 1149: 1147: 1146: 1137: 1135: 1134: 1125: 1123: 1122: 1108: 1106: 1105: 1086: 1084: 1083: 1074: 1072: 1071: 1067:(278361) 2007 JJ 1062: 1060: 1059: 1050: 1048: 1047: 1038: 1036: 1035: 1031:(202421) 2005 UQ 1021: 1019: 1018: 1004: 1002: 1001: 992: 990: 989: 975: 973: 972: 968:(145453) 2005 RR 963: 961: 960: 956:(145452) 2005 RN 951: 949: 948: 944:(144897) 2004 UX 934: 932: 931: 927:(120178) 2003 OP 922: 920: 919: 915:(119951) 2002 KX 910: 908: 907: 903:(308193) 2005 CB 898: 896: 895: 891:(444030) 2004 NT 886: 884: 883: 879:(307616) 2003 QW 874: 872: 871: 867:(307261) 2002 MS 849: 845: 775: 773: 772: 757:The first known 726: 724: 723: 718: 614: 612: 611: 607:(119951) 2002 KX 525: 516: 407: 406: 379: 377: 376: 368: 366: 365: 357: 355: 354: 346: 344: 343: 232: 231: 228: 227: 224: 221: 218: 215: 212: 209: 206: 203: 200: 188:, also called a 174: 167: 160: 129:Detached objects 56: 49: 3621: 3620: 3616: 3615: 3614: 3612: 3611: 3610: 3596: 3595: 3594: 3584: 3582: 3572: 3570: 3560: 3558: 3548: 3546: 3538: 3536: 3531: 3509: 3501: 3500: 3497: 3484: 3479: 3474: 3469: 3464: 3459: 3454: 3449: 3444: 3439: 3434: 3429: 3424: 3411: 3403: 3402: 3399: 3391: 3390: 3387: 3379: 3378: 3375: 3367: 3366: 3363: 3355: 3354: 3351: 3343: 3342: 3339: 3331: 3330: 3327: 3322: 3317: 3309: 3308: 3305: 3300: 3295: 3290: 3285: 3280: 3275: 3270: 3265: 3258: 3250: 3249: 3246: 3241: 3236: 3231: 3226: 3218: 3217: 3214: 3209: 3204: 3196: 3195: 3192: 3187: 3182: 3177: 3172: 3167: 3162: 3157: 3152: 3147: 3142: 3137: 3132: 3127: 3122: 3099: 3094: 3089: 3084: 3079: 3074: 3069: 3064: 3059: 3054: 3049: 3041: 3040: 3037: 3032: 3027: 3022: 3017: 3012: 3007: 3002: 2997: 2992: 2987: 2982: 2977: 2966: 2958: 2957: 2954: 2949: 2944: 2939: 2934: 2929: 2924: 2919: 2914: 2909: 2904: 2899: 2894: 2889: 2884: 2879: 2874: 2869: 2864: 2859: 2854: 2849: 2844: 2836: 2835: 2832: 2827: 2822: 2817: 2812: 2779: 2774: 2769: 2756: 2748: 2747: 2744: 2739: 2734: 2729: 2724: 2719: 2714: 2709: 2704: 2699: 2694: 2689: 2684: 2679: 2674: 2651: 2646: 2641: 2636: 2631: 2626: 2621: 2593: 2563: 2557: 2548: 2393: 2345: 2340: 2309: 2296: 2284: 2268: 2260: 2245: 2240: 2230: 2228: 2221: 2217: 2207: 2205: 2199: 2195: 2138: 2134: 2083: 2079: 2031: 2026: 2022: 1973: 1969: 1966: 1962: 1954: 1918:(7133): 294–6. 1907: 1901: 1897: 1889: 1883: 1868: 1862: 1855: 1845: 1843: 1833: 1829: 1826: 1825: 1818: 1810: 1771: 1765: 1761: 1712: 1708: 1655: 1651: 1602: 1598: 1580: 1576: 1567: 1560: 1556: 1519: 1512: 1463: 1459: 1448: 1446: 1442: 1436: 1417: 1408: 1399: 1392: 1382: 1380: 1375: 1374: 1370: 1360: 1358: 1347: 1336: 1326: 1324: 1314: 1310: 1301: 1300: 1296: 1292: 1287: 1278: 1274: 1269: 1265: 1261: 1249: 1244: 1236: 1235: 1234:(90568) 2004 GV 1232: 1219: 1218: 1217:(86047) 1999 OY 1215: 1207: 1206: 1205:(85633) 1998 KR 1203: 1195: 1194: 1193:(85627) 1998 HP 1191: 1183: 1182: 1181:(79983) 1999 DF 1179: 1166: 1165: 1164:(69987) 1998 WA 1162: 1144: 1143: 1142:(55637) 2002 UX 1140: 1132: 1131: 1130:(55636) 2002 TX 1128: 1120: 1119: 1118:(55565) 2002 AW 1116: 1112:53311 Deucalion 1103: 1102: 1101:(52747) 1998 HM 1099: 1090:486958 Arrokoth 1081: 1080: 1079:(33001) 1997 CU 1077: 1069: 1068: 1065: 1057: 1056: 1055:(24978) 1998 HJ 1053: 1045: 1044: 1043:(24835) 1995 SM 1041: 1033: 1032: 1029: 1016: 1015: 1014:(19255) 1994 VK 1012: 999: 998: 997:(16684) 1994 JQ 995: 987: 986: 985:(15807) 1994 GV 983: 970: 969: 966: 958: 957: 954: 946: 945: 942: 929: 928: 925: 917: 916: 913: 905: 904: 901: 893: 892: 889: 881: 880: 877: 869: 868: 865: 847: 843: 840: 833: 801: 779: 770: 769: 766: 755: 706: 703: 702: 663: 632: 609: 608: 605: 581: 566:486958 Arrokoth 559: 554: 553: 552: 551: 528: 527: 526: 518: 517: 490: 459:cold population 410: 404: 403: 383:486958 Arrokoth 374: 373: 372:(55637) 2002 UX 370: 363: 362: 361:(55565) 2002 AW 359: 352: 351: 350:(55636) 2002 TX 348: 341: 340: 339:(33001) 1997 CU 337: 325:53311 Deucalion 298:136472 Makemake 251:semi-major axes 197: 193: 178: 103:(1:2 resonance) 97:(2:3 resonance) 67:Neptune trojans 24:486958 Arrokoth 17: 12: 11: 5: 3619: 3609: 3608: 3593: 3592: 3580: 3568: 3556: 3533: 3532: 3530: 3529: 3518: 3515: 3514: 3511: 3510: 3508: 3507: 3494: 3492: 3486: 3485: 3483: 3482: 3477: 3472: 3467: 3462: 3457: 3452: 3447: 3442: 3437: 3432: 3427: 3421: 3419: 3413: 3412: 3410: 3409: 3397: 3385: 3373: 3361: 3349: 3337: 3325: 3320: 3315: 3303: 3298: 3293: 3288: 3283: 3278: 3273: 3268: 3263: 3256: 3244: 3239: 3234: 3229: 3224: 3212: 3207: 3202: 3190: 3185: 3180: 3175: 3170: 3165: 3160: 3155: 3150: 3145: 3140: 3135: 3130: 3125: 3120: 3115: 3113:Gǃkúnǁʼhòmdímà 3109: 3107: 3105:Scattered disc 3101: 3100: 3098: 3097: 3092: 3087: 3082: 3077: 3072: 3067: 3062: 3057: 3052: 3047: 3035: 3030: 3025: 3020: 3015: 3010: 3005: 3000: 2995: 2990: 2985: 2980: 2974: 2972: 2968: 2967: 2965: 2964: 2952: 2947: 2942: 2937: 2932: 2927: 2922: 2917: 2912: 2907: 2902: 2897: 2892: 2887: 2882: 2877: 2872: 2867: 2862: 2857: 2852: 2847: 2842: 2830: 2825: 2820: 2815: 2810: 2805: 2800: 2795: 2789: 2787: 2781: 2780: 2778: 2777: 2772: 2766: 2764: 2758: 2757: 2755: 2754: 2742: 2737: 2732: 2727: 2722: 2717: 2712: 2707: 2702: 2697: 2692: 2687: 2682: 2677: 2672: 2667: 2661: 2659: 2653: 2652: 2650: 2649: 2644: 2639: 2634: 2629: 2624: 2619: 2614: 2609: 2603: 2601: 2595: 2594: 2592: 2591: 2586: 2580: 2578: 2569: 2565: 2564: 2551: 2549: 2547: 2546: 2539: 2538: 2537: 2525: 2524: 2523: 2511: 2510: 2509: 2504: 2492: 2491: 2490: 2478: 2477: 2476: 2471: 2459: 2458: 2457: 2452: 2447: 2435: 2434: 2433: 2421: 2420: 2419: 2414: 2401: 2399: 2395: 2394: 2392: 2391: 2386: 2381: 2380: 2379: 2374: 2369: 2364: 2356: 2350: 2347: 2346: 2339: 2338: 2331: 2324: 2316: 2307: 2306: 2294: 2282: 2266: 2258: 2244: 2243:External links 2241: 2239: 2238: 2215: 2193: 2154:(1): 838–846. 2132: 2119:10.1086/342089 2095:(1): L65–L68. 2077: 2040:(1): L25–L28. 2029: 2020: 1971: 1960: 1895: 1881: 1853: 1816: 1796:10.1086/320917 1782:(1): L95–L98. 1759: 1706: 1649: 1636:10.1086/342447 1596: 1574: 1550:10.1086/427395 1510: 1457: 1434: 1390: 1368: 1334: 1308: 1293: 1291: 1288: 1286: 1285: 1272: 1262: 1260: 1257: 1256: 1255: 1248: 1245: 1243: 1242: 1230: 1225: 1213: 1201: 1189: 1177: 1172: 1160: 1158:66652 Borasisi 1155: 1150: 1138: 1126: 1114: 1109: 1097: 1092: 1087: 1075: 1063: 1051: 1039: 1027: 1022: 1010: 1005: 993: 981: 979:148780 Altjira 976: 964: 952: 940: 938:120347 Salacia 935: 923: 911: 899: 887: 875: 863: 858: 852: 832: 829: 800: 797: 777: 754: 751: 729: 728: 716: 713: 710: 699: 696: 693: 662: 659: 658: 657: 654: 647: 631: 628: 624:scattered disk 592:(MPC) and the 580: 577: 573:binary objects 558: 555: 530: 529: 520: 519: 511: 510: 509: 508: 507: 489: 486: 467:hot population 417:Semimajor axis 409: 401: 386: 385: 380: 335: 329:66652 Borasisi 314: 304: 295: 180: 179: 177: 176: 169: 162: 154: 151: 150: 149: 148: 147: 146: 140: 139: 138: 137: 136: 121: 120: 119: 108: 107: 106: 105: 104: 98: 87: 84:Classical KBOs 69: 64: 15: 9: 6: 4: 3: 2: 3618: 3607: 3604: 3603: 3601: 3591: 3581: 3579: 3569: 3567: 3557: 3555: 3545: 3544: 3541: 3528: 3520: 3519: 3516: 3505: 3496: 3495: 3493: 3491: 3487: 3480: 3473: 3470: 3463: 3460: 3453: 3450: 3443: 3440: 3433: 3430: 3423: 3422: 3420: 3418: 3414: 3407: 3398: 3395: 3386: 3383: 3374: 3371: 3362: 3359: 3350: 3347: 3338: 3335: 3326: 3323: 3316: 3313: 3304: 3301: 3294: 3291: 3284: 3281: 3274: 3271: 3264: 3261: 3257: 3254: 3245: 3242: 3235: 3232: 3225: 3222: 3213: 3210: 3203: 3200: 3191: 3188: 3181: 3178: 3171: 3168: 3161: 3158: 3151: 3148: 3141: 3138: 3131: 3128: 3121: 3119: 3116: 3114: 3111: 3110: 3108: 3106: 3102: 3095: 3088: 3085: 3078: 3075: 3068: 3065: 3058: 3055: 3048: 3045: 3036: 3033: 3026: 3023: 3016: 3013: 3006: 3003: 2996: 2993: 2986: 2983: 2976: 2975: 2973: 2969: 2962: 2953: 2950: 2943: 2940: 2933: 2930: 2923: 2920: 2913: 2910: 2903: 2900: 2893: 2890: 2883: 2880: 2873: 2870: 2863: 2860: 2853: 2850: 2843: 2840: 2831: 2828: 2821: 2818: 2811: 2809: 2806: 2804: 2801: 2799: 2796: 2794: 2791: 2790: 2788: 2786: 2782: 2775: 2768: 2767: 2765: 2763: 2759: 2752: 2743: 2740: 2733: 2730: 2723: 2720: 2713: 2710: 2703: 2700: 2693: 2690: 2683: 2680: 2673: 2671: 2668: 2666: 2663: 2662: 2660: 2658: 2654: 2647: 2640: 2637: 2630: 2627: 2620: 2618: 2615: 2613: 2610: 2608: 2605: 2604: 2602: 2600: 2596: 2590: 2587: 2585: 2582: 2581: 2579: 2577: 2576:Asteroid belt 2573: 2570: 2566: 2561: 2555: 2545: 2544: 2540: 2536: 2533: 2532: 2531: 2530: 2526: 2522: 2519: 2518: 2517: 2516: 2512: 2508: 2505: 2503: 2500: 2499: 2498: 2497: 2493: 2489: 2486: 2485: 2484: 2483: 2479: 2475: 2472: 2470: 2467: 2466: 2465: 2464: 2460: 2456: 2453: 2451: 2448: 2446: 2443: 2442: 2441: 2440: 2436: 2432: 2429: 2428: 2427: 2426: 2422: 2418: 2415: 2413: 2410: 2409: 2408: 2407: 2403: 2402: 2400: 2396: 2390: 2387: 2385: 2382: 2378: 2375: 2373: 2370: 2368: 2365: 2363: 2360: 2359: 2357: 2355: 2352: 2351: 2348: 2344: 2343:Dwarf planets 2337: 2332: 2330: 2325: 2323: 2318: 2317: 2314: 2310: 2303: 2299: 2295: 2291: 2287: 2283: 2279: 2275: 2271: 2267: 2263: 2259: 2255: 2251: 2250:Jewitt, David 2247: 2246: 2226: 2219: 2204: 2197: 2189: 2185: 2180: 2175: 2171: 2167: 2162: 2157: 2153: 2149: 2148: 2143: 2136: 2128: 2124: 2120: 2116: 2112: 2108: 2103: 2098: 2094: 2090: 2089: 2081: 2073: 2069: 2065: 2061: 2057: 2053: 2048: 2043: 2039: 2035: 2024: 2016: 2012: 2008: 2004: 2000: 1996: 1991: 1986: 1982: 1978: 1964: 1953: 1949: 1945: 1941: 1937: 1933: 1929: 1925: 1921: 1917: 1913: 1906: 1899: 1888: 1884: 1878: 1874: 1867: 1860: 1858: 1841: 1837: 1823: 1821: 1809: 1805: 1801: 1797: 1793: 1789: 1785: 1781: 1777: 1770: 1763: 1755: 1751: 1747: 1743: 1739: 1735: 1730: 1725: 1721: 1717: 1710: 1702: 1698: 1694: 1690: 1686: 1682: 1677: 1672: 1668: 1664: 1660: 1659:Jewitt, David 1653: 1645: 1641: 1637: 1633: 1629: 1625: 1620: 1615: 1611: 1607: 1600: 1592: 1588: 1584: 1578: 1566: 1559: 1551: 1546: 1542: 1538: 1534: 1530: 1529: 1524: 1517: 1515: 1506: 1502: 1498: 1494: 1490: 1486: 1482: 1478: 1474: 1470: 1469: 1461: 1441: 1437: 1431: 1427: 1423: 1416: 1415: 1407: 1403: 1397: 1395: 1378: 1372: 1356: 1352: 1345: 1343: 1341: 1339: 1322: 1318: 1317:Jewitt, David 1312: 1304: 1298: 1294: 1282: 1276: 1267: 1263: 1254: 1251: 1250: 1240: 1231: 1229: 1226: 1223: 1214: 1211: 1202: 1199: 1190: 1187: 1178: 1176: 1173: 1170: 1161: 1159: 1156: 1154: 1151: 1148: 1139: 1136: 1127: 1124: 1115: 1113: 1110: 1107: 1098: 1096: 1093: 1091: 1088: 1085: 1076: 1073: 1064: 1061: 1052: 1049: 1040: 1037: 1028: 1026: 1023: 1020: 1011: 1009: 1006: 1003: 994: 991: 982: 980: 977: 974: 965: 962: 953: 950: 941: 939: 936: 933: 924: 921: 912: 909: 900: 897: 888: 885: 876: 873: 864: 862: 859: 857: 854: 853: 851: 838: 828: 826: 822: 818: 814: 805: 796: 794: 791: 787: 783: 774: 764: 763:Haumea family 760: 750: 748: 747: 742: 741: 736: 735: 714: 711: 708: 700: 697: 694: 691: 687: 686: 685: 683: 679: 674: 672: 668: 655: 652: 648: 646: 642: 641: 640: 637: 627: 625: 620: 618: 613: 603: 599: 595: 591: 587: 576: 574: 569: 567: 562: 549: 545: 541: 537: 536:resonant TNOs 533: 524: 515: 506: 502: 500: 494: 485: 483: 479: 475: 470: 468: 464: 460: 455: 453: 449: 445: 441: 437: 432: 426: 425:resonant TNOs 422: 418: 414: 400: 398: 394: 390: 389:136108 Haumea 384: 381: 378: 367: 356: 345: 336: 334: 330: 326: 322: 318: 315: 312: 308: 305: 303: 299: 296: 293: 290: 289: 288: 285: 283: 279: 275: 270: 268: 264: 260: 256: 252: 248: 244: 240: 236: 230: 191: 187: 175: 170: 168: 163: 161: 156: 155: 153: 152: 144: 141: 135: 132: 131: 130: 127: 126: 125: 122: 118: 117:Resonant SDOs 115: 114: 112: 109: 102: 99: 96: 93: 92: 91: 90:Resonant KBOs 88: 85: 82: 81: 79: 76: 75: 73: 70: 68: 65: 63: 60: 59: 58: 57: 54: 45: 41: 36: 29: 25: 21: 3590:Solar System 2784: 2541: 2527: 2513: 2494: 2480: 2461: 2437: 2423: 2404: 2308: 2301: 2289: 2278:the original 2273: 2229:. Retrieved 2218: 2206:. Retrieved 2196: 2151: 2145: 2135: 2092: 2086: 2080: 2037: 2033: 2023: 1980: 1976: 1963: 1915: 1911: 1898: 1872: 1844:. Retrieved 1839: 1834:Q < 48 AU 1830:q > 40 AU 1808:the original 1779: 1775: 1762: 1719: 1715: 1709: 1666: 1662: 1652: 1609: 1605: 1599: 1591:the original 1577: 1565:the original 1532: 1526: 1472: 1466: 1460: 1447:. Retrieved 1440:the original 1413: 1381:. Retrieved 1371: 1359:. Retrieved 1355:the original 1325:. Retrieved 1311: 1297: 1280: 1275: 1266: 1095:50000 Quaoar 1008:174567 Varda 861:20000 Varuna 856:15760 Albion 848:Q < 48 AU 844:q > 40 AU 841: 817:New Horizons 810: 756: 745: 744: 739: 738: 733: 732: 730: 684:orbits that 681: 677: 675: 664: 649:its average 633: 621: 582: 570: 563: 560: 547: 531: 503: 495: 491: 488:Distribution 481: 477: 471: 466: 458: 456: 444:50000 Quaoar 433: 430: 387: 311:20000 Varuna 307:50000 Quaoar 302:dwarf planet 292:15760 Albion 286: 282:15760 Albion 271: 263:eccentricity 189: 185: 183: 83: 3578:Outer space 3566:Spaceflight 2286:"TNO pages" 1669:(5): 1837. 1612:(4): 2279. 1153:58534 Logos 1025:19521 Chaos 799:Exploration 542:(grey) and 421:inclination 321:58534 Logos 317:19521 Chaos 267:inclination 235:Kuiper belt 86:(cubewanos) 42:(blue) and 2971:Other KBOs 2589:Interamnia 2450:Atmosphere 2417:Atmosphere 2384:Mesoplanet 2161:1710.07610 1983:(2): 547. 1722:(2): 758. 1583:Jewitt, D. 1558:"Preprint" 1402:Jewitt, D. 1290:References 671:B. Marsden 667:B. Gladman 643:it is not 546:(yellow). 145:(ICO/OCOs) 3554:Astronomy 3118:Dziewanna 2785:Cubewanos 2568:Candidate 2398:Consensus 1990:0803.1080 1729:0711.1545 1676:0808.3025 1587:"Plutino" 1383:3 October 1259:Footnotes 678:classical 602:scattered 51:Types of 3600:Category 3527:Category 3490:Sednoids 2762:Twotinos 2657:Plutinos 2607:Chariklo 2599:Centaurs 2529:Gonggong 2482:Makemake 2231:13 March 2208:13 March 2188:73588205 2127:18671789 2072:18546361 2015:15139257 1952:Archived 1940:17361177 1887:Archived 1701:16473299 1644:30565926 1585:(2004). 1497:14647375 1422:Springer 1247:See also 793:spectrum 790:infrared 753:Families 645:resonant 617:plutinos 598:Makemake 544:sednoids 448:ecliptic 440:plutinos 397:resonant 190:cubewano 134:Sednoids 101:Twotinos 95:Plutinos 62:Centaurs 3540:Portals 3499:2012 VP 3476:2008 ST 3466:2007 JJ 3456:2005 TB 3446:2004 XR 3436:2003 QX 3426:2003 FY 3401:2021 LL 3389:2021 DR 3377:2018 VG 3365:2018 AG 3353:2017 FO 3341:2015 RR 3329:2015 KH 3319:2014 WK 3307:2014 UZ 3297:2014 EZ 3287:2014 AN 3277:2013 FY 3267:2010 VZ 3260:2010 TJ 3248:2010 JO 3238:2010 RF 3228:2010 RE 3216:2010 KZ 3206:2008 OG 3194:2006 QH 3184:2005 RM 3174:2005 QU 3164:2004 XA 3154:2002 TC 3144:2001 UR 3134:1996 TL 3124:1996 GQ 3091:2015 RR 3081:2015 AM 3071:2014 UM 3061:2013 FZ 3051:2011 GM 3039:2011 FW 3029:2010 VK 3019:2010 JO 3009:2002 XW 2999:2000 YW 2989:1999 DE 2979:1999 CD 2956:2010 FX 2946:2005 UQ 2936:2005 RN 2926:2004 UX 2916:2004 TY 2906:2004 PF 2896:2004 NT 2886:2004 GV 2876:2003 QW 2866:2002 UX 2856:2002 MS 2846:2002 KX 2834:2002 CY 2824:2002 AW 2814:1998 SN 2798:Salacia 2771:2002 WC 2746:2017 OF 2736:2007 JH 2726:2003 VS 2716:2003 UZ 2706:2003 AZ 2696:2002 XV 2686:2002 VR 2676:2001 QF 2643:2014 NW 2633:2013 TC 2623:1999 OX 2445:Geology 2412:Geology 2389:Planemo 2256:. UCLA. 2166:Bibcode 2107:Bibcode 2052:Bibcode 1995:Bibcode 1970:2003 EL 1948:4430027 1920:Bibcode 1846:31 July 1804:7982844 1784:Bibcode 1734:Bibcode 1681:Bibcode 1624:Bibcode 1537:Bibcode 1505:4395099 1477:Bibcode 1449:2 March 1361:26 July 782:tholins 768:2002 TX 682:current 588:). The 538:(red), 452:Neptune 399:orbit. 243:Neptune 241:beyond 113:(SDOs) 80:(KBOs) 74:(TNOs) 40:Neptune 2808:Varuna 2617:Pholus 2612:Chiron 2584:Hygiea 2496:Quaoar 2463:Haumea 2377:Pallas 2367:Triton 2362:Phoebe 2186:  2125:  2070:  2013:  1946:  1938:  1912:Nature 1879:  1802:  1754:336950 1752:  1716:Icarus 1699:  1642:  1503:  1495:  1468:Nature 1432:  1426:Praxis 1327:1 July 1323:. UCLA 1281:inside 548:Right: 427:(red). 405:Orbits 278:Charon 239:orbits 46:(pink) 2803:Varda 2793:Chaos 2670:Ixion 2543:Sedna 2507:Rings 2469:Moons 2455:Moons 2439:Pluto 2425:Orcus 2406:Ceres 2372:Vesta 2184:S2CID 2156:arXiv 2123:S2CID 2097:arXiv 2068:S2CID 2042:arXiv 2011:S2CID 1985:arXiv 1955:(PDF) 1944:S2CID 1908:(PDF) 1890:(PDF) 1869:(PDF) 1811:(PDF) 1800:S2CID 1772:(PDF) 1750:S2CID 1724:arXiv 1697:S2CID 1671:arXiv 1640:S2CID 1614:arXiv 1568:(PDF) 1561:(PDF) 1501:S2CID 1443:(PDF) 1418:(PDF) 1409:(PDF) 821:Pluto 715:0.240 532:Left: 259:Pluto 44:Pluto 2665:Huya 2535:Moon 2521:Moon 2515:Eris 2502:Moon 2488:Moon 2474:Ring 2431:Moon 2233:2018 2210:2018 1936:PMID 1877:ISBN 1848:2023 1832:and 1493:PMID 1451:2006 1430:ISBN 1385:2008 1363:2010 1329:2013 846:and 831:List 825:NASA 712:< 540:SDOs 482:Halo 478:Core 472:The 419:and 309:and 3502:113 3478:291 3458:190 3448:190 3438:113 3428:128 3356:161 3344:245 3332:162 3321:509 3310:224 3251:179 3197:181 3176:182 3166:192 3156:302 3146:163 3093:245 3083:281 3031:201 3021:179 3001:134 2981:158 2948:513 2918:364 2908:115 2837:248 2826:197 2816:165 2718:413 2688:128 2678:298 2635:146 2174:doi 2152:474 2115:doi 2093:573 2060:doi 2038:468 2003:doi 1981:496 1928:doi 1916:446 1792:doi 1780:554 1742:doi 1720:194 1689:doi 1667:136 1632:doi 1610:124 1545:doi 1533:129 1485:doi 1473:426 1196:151 1133:300 1121:197 1104:151 1058:151 1034:513 788:in 771:300 484:). 364:197 353:300 205:juː 3602:: 3468:43 3404:37 3392:15 3380:18 3368:37 3299:51 3289:55 3279:27 3269:98 3240:43 3230:64 3219:39 3208:19 3186:43 3136:66 3126:21 3073:33 3063:27 3053:27 3042:62 3011:93 2959:86 2938:43 2928:10 2898:33 2878:90 2868:25 2848:14 2773:19 2749:69 2738:43 2708:84 2698:93 2645:65 2288:. 2252:. 2182:. 2172:. 2164:. 2150:. 2144:. 2121:. 2113:. 2105:. 2091:. 2066:. 2058:. 2050:. 2036:. 2030:43 2009:. 2001:. 1993:. 1979:. 1972:61 1950:. 1942:. 1934:. 1926:. 1914:. 1910:. 1885:. 1856:^ 1819:^ 1798:. 1790:. 1778:. 1774:. 1748:. 1740:. 1732:. 1718:. 1695:. 1687:. 1679:. 1665:. 1638:. 1630:. 1622:. 1608:. 1543:. 1531:. 1525:. 1513:^ 1499:. 1491:. 1483:. 1471:. 1428:. 1420:. 1411:. 1393:^ 1337:^ 1319:. 1208:65 1167:25 1145:25 1082:29 1070:43 1046:55 971:43 959:43 947:10 930:32 918:14 906:79 894:33 882:90 850:. 786:μm 669:, 610:14 501:. 454:. 375:25 369:, 358:, 347:, 342:29 331:, 327:, 323:, 319:, 280:: 255:AU 226:oʊ 211:iː 184:A 3542:: 2991:9 2888:9 2858:4 2728:2 2625:3 2335:e 2328:t 2321:v 2292:. 2264:. 2235:. 2212:. 2190:. 2176:: 2168:: 2158:: 2129:. 2117:: 2109:: 2099:: 2074:. 2062:: 2054:: 2044:: 2017:. 2005:: 1997:: 1987:: 1930:: 1922:: 1850:. 1836:" 1828:" 1794:: 1786:: 1756:. 1744:: 1736:: 1726:: 1703:. 1691:: 1683:: 1673:: 1646:. 1634:: 1626:: 1616:: 1572:) 1555:( 1553:. 1547:: 1539:: 1507:. 1487:: 1479:: 1455:) 1453:. 1424:- 1387:. 1365:. 1331:. 1305:. 1237:9 1220:3 1184:9 1017:8 1000:1 988:9 870:4 839:. 778:2 709:e 692:) 584:( 463:° 229:/ 223:n 220:ʌ 217:w 214:ˈ 208:b 202:k 199:ˌ 196:/ 192:( 173:e 166:t 159:v 30:.

Index


486958 Arrokoth
visited by a spacecraft

Neptune
Pluto
distant minor planets
Centaurs
Neptune trojans
Trans-Neptunian objects
Kuiper belt objects
Classical KBOs
Resonant KBOs
Plutinos
Twotinos
Scattered disc objects
Resonant SDOs
Extreme trans-Neptunian object
Detached objects
Sednoids
Oort cloud objects
v
t
e
/ˌkjuːbˈwʌn/
Kuiper belt
orbits
Neptune
orbital resonance with Neptune
semi-major axes

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