842:
546:
531:
580:
is unusually low (< 0.4). All of these parameters are in the extremes of their normal ranges for such objects. The wide spacing and low eccentricity conspire to make the system prone to disruption, and its lifetime is estimated to be in the order of another billion years.
34:
916:
527:. Later in 2001, Kavelaars discovered that it is a binary system. The diameter of the two components are estimated at 128 kilometers (80 miles) and 126 kilometers (78 miles).
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724:
Petit, J. -M.; Kavelaars, J. J.; Gladman, B. J.; Margot, J. L.; Nicholson, P. D.; Jones, R. L.; et al. (October 2008).
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118:
564:
In 2008, work was published showing that the binary has an extraordinarily long orbital period (for a binary
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576:) of about 17 years. The orbital radius is also remarkably high (105,000 to 135,000 km) while the
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pair, taken 30 minutes apart to show their motion relative to background stars and galaxies
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Trans-Neptunian
Binaries and the History of the Outer Solar System
544:
529:
402:
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898:
343:
822:
Kuiper belt pair sets record for long-distance relationship
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684:
806:, Isaac Newton Group of Telescopes, 13 December 2010
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53:
604:
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611:"Asteroids with Satellites Database – 2001 QW322"
667:"JPL Small-Body Database Browser: (2001 QW322)"
640:"Orbit Fit and Astrometric record for 01QW322"
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910:
8:
719:
717:
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609:Johnston, Wm. Robert (20 September 2014).
32:
1455:Minor planet object articles (unnumbered)
661:
659:
657:
499:, located in the outermost region of the
1465:Astronomical objects discovered in 2001
726:"The Extreme Kuiper Belt Binary 2001 QW
693:"List of Known Trans-Neptunian Objects"
691:Johnston, Wm. Robert (18 August 2020).
590:
20:
818:, Gemini Observatory, 28 October 2008
305:Longitude of ascending node
7:
812:, Gemini Observatory, 22 August 2011
845:
14:
642:. SwRI (Space Science Department)
534:Animation of CFHT images of the
16:Binary minor planet and cubewano
816:A Highly-split Kuiper Belt Pair
798:The Extreme Kuiper Belt Binary
231:45.294 AU (6.7759 Tm)
219:43.319 AU (6.4804 Tm)
1460:Binary trans-Neptunian objects
46:Canada-France-Hawaii Telescope
1:
1450:Classical Kuiper belt objects
317:Argument of perihelion
1481:
136:Minor planet category
1209:
1194:Small Solar System bodies
473:
248:Orbital period (sidereal)
177:
165:
31:
461:Absolute magnitude
353:Physical characteristics
926:Trans-Neptunian objects
837:JPL Small-Body Database
757:10.1126/science.1163148
556:system resolved by the
509:Mauna Kea Observatories
160:Orbital characteristics
1319:Trans-Neptunian object
945:Scattered-disc objects
566:trans-Neptunian object
561:
558:Hubble Space Telescope
542:
507:was discovered at the
489:trans-Neptunian object
288:0° 0 12.031 / day
669:(2004-10-15 last obs)
548:
533:
191:18.11 yr (6,613 days)
179:Uncertainty parameter
1292:Distant minor planet
511:on 27 July 2001, by
119:MPC designation
1152:541132 Leleākūhonua
888:Physical parameters
749:2008Sci...322..432P
104:Discovery date
93:Discovery site
28:
697:Johnston's Archive
615:Johnston's Archive
562:
549:Components of the
543:
60:Discovered by
1437:
1436:
1349:
1348:
1234:Meanings of names
1160:
1159:
828:, 16 October 2008
743:(5900): 432–434.
477:
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83:Matthew J. Holman
68:John J. Kavelaars
1472:
1207:
1187:
1180:
1173:
1164:
1148:
1146:
1145:
991:
955:Resonant objects
950:Detached objects
919:
912:
905:
896:
880:Orbital elements
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734:
721:
708:
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443:Geometric albedo
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347:
173: 2459000.5)
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78:Brett J. Gladman
43:
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29:
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1196:
1191:
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989:
981:
960:Neptune trojans
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517:Jean-Marc Petit
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338:: 126 km;
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228:
226:Semi-major axis
187:Observation arc
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73:Jean-Marc Petit
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1393:Near-parabolic
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1339:Scattered disc
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1307:Neptune trojan
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1282:Spectral types
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1272:Jupiter trojan
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848:Close approach
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792:External links
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525:Matthew Holman
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44:imaged by the
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1262:Asteroid belt
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1257:Aten asteroid
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1202:Minor planets
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987:Dwarf planets
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872:Orbit diagram
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826:New Scientist
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521:Brett Gladman
518:
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498:
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493:binary system
490:
486:
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457:
447:
444:
439:
435:0.2 g/cm
429:
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420:
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361:Mean diameter
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205:(6.6281
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169:31 May 2020 (
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1429:Space debris
883:
875:
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736:
700:. Retrieved
696:
671:. Retrieved
644:. Retrieved
636:Marc W. Buie
630:
618:. Retrieved
614:
578:eccentricity
574:minor planet
563:
513:JJ Kavelaars
501:Solar System
479:
478:
462:
342:: 6280
268:Mean anomaly
253:294.92
237:Eccentricity
201:44.306
112:Designations
107:27 July 2001
18:
1419:Cosmic dust
1383:Long-period
1373:Halley-type
1329:Kuiper belt
1214:Designation
1135:90377 Sedna
933:TNO classes
702:8 September
646:17 February
620:8 September
497:Kuiper belt
396:(secondary)
294:Inclination
283:Mean motion
1444:Categories
1424:Meteoroids
1403:Sungrazing
1378:Hyperbolic
1334:Oort cloud
1277:Near-Earth
832:2001 QW322
585:References
416:10 kg
329:satellites
215:Perihelion
1314:Damocloid
977:TNO moons
940:Cubewanos
864:Ephemeris
856:Discovery
781:206515135
765:0036-8075
381:(primary)
54:Discovery
1398:Periodic
1324:Detached
1244:Asteroid
1127:Sednoids
1110:Dysnomia
1098:Xiangliu
1093:Gonggong
1081:Makemake
1030:Kerberos
970:Twotinos
965:Plutinos
773:18927391
673:30 March
570:asteroid
505:cubewano
393: km
310:124.635°
197:Aphelion
150:cubewano
1363:Extinct
1302:Centaur
1141:2012 VP
1052:Hiʻiaka
990:(moons)
834:at the
800:2001 QW
745:Bibcode
737:Science
560:in 2017
551:2001 QW
536:2001 QW
495:of the
481:2001 QW
425:density
322:92.373°
298:4.7995°
273:109.608
241:0.02229
125:2001 QW
48:in 2001
39:2001 QW
23:2001 QW
1355:Comets
1267:Family
1252:Active
1219:Groups
1069:Weywot
1064:Quaoar
1047:Namaka
1042:Haumea
1015:Charon
884:·
882:
876:·
874:
868:·
866:
860:·
858:
852:·
850:
779:
771:
763:
523:, and
503:. The
412:0.184)
408:(2.150
375:
327:Known
1412:Other
1368:Great
1117:Sedna
1074:Rings
1035:Hydra
1010:Pluto
1003:Vanth
998:Orcus
886:
878:
870:
862:
854:
777:S2CID
733:(PDF)
487:is a
453:0.008
449:0.093
423:Mean
167:Epoch
1388:Lost
1229:Moon
1224:List
1105:Eris
1057:Ring
1020:Styx
769:PMID
761:ISSN
704:2020
675:2016
648:2018
622:2020
491:and
403:Mass
1144:113
1086:MK2
1025:Nix
802:322
753:doi
741:322
728:322
572:or
553:322
538:322
483:322
469:7.8
463:(H)
385:126
367:128
334:1 (
145:TNO
127:322
41:322
25:322
1446::
824:,
775:.
767:.
759:.
751:.
739:.
735:.
712:^
695:.
683:^
656:^
638:.
613:.
593:^
568:,
519:,
515:,
390:−5
388:+3
377:km
372:−4
370:+2
255:yr
207:Tm
203:AU
171:JD
1186:e
1179:t
1172:v
918:e
911:t
904:v
783:.
755::
747::
730:"
706:.
677:.
650:.
624:.
451:±
433:±
431:1
414:×
410:±
346:)
344:d
340:P
336:D
275:°
261:)
259:d
209:)
181:4
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