1173:
1179:
453:
465:
1167:
441:
1378:
1103:
403:) is similar to that of Earth (0.99957 AU), but it has a relatively low eccentricity (0.108105) and moderate orbital inclination (9.181°). Gravitational interaction with Earth causes its orbit to change so that its average period is one year. It alternates between being an Aten asteroid and being an Apollo asteroid, changing dynamical status every 113 years approximately. As of 30 November 2015, this object is the 14th known Earth
1664:
1807:
1796:
675:
de la Fuente Marcos, Carlos; de la Fuente Marcos, RaĂșl (2016). "From horseshoe to quasi-satellite and back again: the curious dynamics of Earth co-orbital asteroid 2015 SO2".
1853:
2123:
1224:
2138:
285:
1639:
407:
and the 9th known object following a horseshoe path with respect to our planet. Its orbital evolution is characterized by alternating horseshoe and
1846:
1172:
1057:
1377:
1102:
1373:
932:
1178:
96:
2133:
275:
1839:
2128:
1970:
351:, the ninth known Earth horseshoe librator. Prior to its most recent close encounter with our planet (2015 September 30) it was an
34:
820:
333:
251:
1902:
1145:
677:
569:
172:
1735:
1708:
452:
2061:
464:
1601:
1820:
1815:
1810:
1120:
1004:
1887:
1050:
2051:
2041:
2046:
598:
1626:
1606:
1882:
404:
60:
2118:
2066:
1950:
1862:
1663:
982:
962:
778:
Bottke, W. F., Morbidelli, A., Jedicke, R., Petit, J.-M., Levison, H. F., Michel, P., Metcalfe, T. S. 2002,
593:
370:
293:
205:
201:
161:
143:
39:
796:
From horseshoe to quasi-satellite and back again: the curious dynamics of Earth co-orbital asteroid 2015 SO
440:
1987:
1697:
1085:
1078:
1043:
970:
954:
895:
863:
855:
369:
was discovered on 21 September 2015 by B. MikuĆŸ observing with the 0.6-m f/3.3 Cichocki telescope at the
1892:
1774:
1687:
1195:
634:
263:
125:
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903:
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871:
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1960:
1747:
1730:
1200:
788:
Brasser, R., Innanen, K. A., Connors, M., Veillet, C., Wiegert, P., Mikkola, S., Chodas, P. W. 2004,
696:
183:
1166:
926:
1677:
1098:
424:
240:
399:(Earth-crossing but with a period less than a year). Its semi-major axis (currently 0.999115
1800:
1692:
1644:
1266:
1242:
712:
686:
521:
420:
305:
1012:
1945:
1897:
1742:
1333:
1216:
400:
149:
113:
86:
2071:
1345:
704:
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106:
996:
988:
1992:
1935:
1920:
1137:
1126:
1028:
408:
378:
352:
344:
133:
1621:
977:
815:
729:
2007:
1975:
1940:
1634:
836:
221:
194:
1020:
2112:
2031:
1930:
1925:
1397:
716:
650:
532:
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337:
91:
795:
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755:
2097:
1870:
1762:
1392:
1187:
214:
77:
2087:
2036:
1997:
1611:
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1532:
1527:
1522:
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1442:
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1417:
1407:
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1112:
841:
602:
588:
229:
2056:
2002:
1713:
1682:
1672:
1577:
1560:
1500:
1321:
1309:
1230:
776:
Debiased
Orbital and Absolute Magnitude Distribution of the Near-Earth Objects
708:
515:
423:
of 23.9, it has a diameter in the range of 50â111 meters (for an assumed
117:
831:
740:
2092:
1982:
1831:
1754:
1593:
1555:
1542:
1412:
1297:
1285:
1254:
758:
Bottke, W. F., Jedicke, R., Morbidelli, A., Petit, J.-M., Gladman, B. 2000,
153:
1912:
1651:
1631:
1480:
1151:
374:
340:
1616:
1205:
766:
A Numerical Survey of
Transient Co-orbitals of the Terrestrial Planets
1588:
1475:
1470:
1465:
1460:
691:
2023:
1779:
1767:
1455:
348:
1035:
377:. As of 30 November 2015, it has been observed 84 times with an
1835:
1039:
801:
de la Fuente Marcos, C., de la Fuente Marcos, R. 2016,
756:
2080:
2022:
1959:
1911:
1869:
1722:
1660:
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1214:
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1136:
1111:
1097:
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132:
105:
75:
58:
53:
45:
33:
28:
1847:
1051:
433:Animation of 2015 SO2 orbit from 1600 to 2500
8:
18:
762:, Vol. 288, Issue 5474, pp. 2190â2194.
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1854:
1840:
1832:
1108:
1058:
1044:
1036:
670:
668:
2124:Minor planet object articles (unnumbered)
851:NeoDyS-2, Near Earth ObjectsâDynamic Site
690:
583:
581:
579:
577:
805:, Vol. 361, Issue 1, article 16 (10 pp).
551:This is assuming an albedo of 0.20â0.04.
2139:Astronomical objects discovered in 2015
842:The 60-cm Cichocki Sky Survey Telescope
562:
178:0.99892124 AU (149.436491 Gm)
792:, Vol. 171, Issue 1, pp. 102â109.
782:, Vol. 156, Issue 2, pp. 399â433.
17:
252:Longitude of ascending node
7:
1129:(technology demonstration; Dec 2015)
986:
772:, Vol. 144, Issue 1, pp. 1â20.
645:
643:
427:range of 0.04â0.20, respectively).
280:0.0191611 AU (2.86646 Gm)
166:0.890962 AU (133.2860 Gm)
14:
1806:
1805:
1794:
1662:
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1177:
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1101:
463:
451:
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803:Astrophysics and Space Science
786:Transient co-orbital asteroids
678:Astrophysics and Space Science
546:
1:
1148:(weather satellite; Feb 2015)
1123:(weather satellite; Jan 2015)
1821:Category:2016 in outer space
1816:Category:2015 in outer space
1811:Category:2014 in outer space
1154:(space telescope; Sep 2015)
933:space situational awareness
385:Orbit and orbital evolution
264:Argument of perihelion
2155:
2134:Earth co-orbital asteroids
1782:orbit insertion; Dec 2015)
1758:(end of mission; Apr 2015)
1750:orbit insertion; Mar 2015)
1607:1SWASP J093010.78+533859.5
570:List Of Aten Minor Planets
78:Minor planet category
1878:
1863:Small Solar System bodies
1789:
1709:67P/ChuryumovâGerasimenko
1225:Asteroid close approaches
1163:
1071:
832:Crni Vrh Observatory News
709:10.1007/s10509-015-2597-8
651:"Asteroid Size Estimator"
599:Jet Propulsion Laboratory
446:Relative to Sun and Earth
318:
195:Orbital period (sidereal)
124:
112:
2129:Earth-crossing asteroids
1602:WISE J224607.57â052635.0
306:Absolute magnitude
286:Physical characteristics
983:JPL Small-Body Database
701:2016Ap&SS.361...16D
594:JPL Small-Body Database
107:Orbital characteristics
1988:Trans-Neptunian object
1801:Outer space portal
1738:; Nov 2014 / Mar 2015)
1643:(first observation of
864:Observation prediction
768:Christou, A. A. 2000,
1688:C/2014 Q1 (PanSTARRS)
1196:2015 Kerala meteoroid
126:Uncertainty parameter
1961:Distant minor planet
1201:2015 Thailand bolide
1099:Space probe launches
637:Retrieved 2015-11-28
635:NEODyS-2 on 2015 SO2
625:Retrieved 2015-11-28
623:AstDys-2 on 2015 SO2
371:Ärni Vrh Observatory
343:that is a temporary
61:MPC designation
1678:C/2014 Q2 (Lovejoy)
1645:gravitational waves
1627:541132 LeleÄkĆ«honua
1138:Space observatories
1029:Physical parameters
963:Physical properties
415:Physical properties
46:Discovery date
25:
1693:C/2015 G2 (MASTER)
896:Observational info
421:absolute magnitude
235:0° 59 13.937 / day
35:Discovered by
2106:
2105:
2018:
2017:
1903:Meanings of names
1829:
1828:
1723:Space exploration
1161:
1160:
347:companion to the
322:
321:
152:(165.586945
49:21 September 2015
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1267:(523775) 2014 YB
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1247:
1243:(357439) 2004 BL
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1021:Orbital elements
904:Close approaches
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653:. CNEOS NASA/JPL
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529:
527:
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522:(419624) 2010 SO
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501:
492:
490:
481:
479:
467:
455:
443:
395:is currently an
394:
368:
330:
204:(364.66602
148:1.10688036
120: 2457600.5)
71:
26:
24:
2154:
2153:
2149:
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2143:
2109:
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2014:
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1907:
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1579:
1576:
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1391:evaporation of
1368:
1360:
1359:
1356:
1348:
1347:
1346:(85989) 1999 JD
1344:
1336:
1335:
1334:(33342) 1998 WT
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1127:LISA Pathfinder
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920:Orbit animation
888:Proper elements
837:Discovery image
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799:
750:Further reading
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353:Apollo asteroid
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173:Semi-major axis
134:Observation arc
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19:
12:
11:
5:
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2119:Aten asteroids
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2100:
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2062:Near-parabolic
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2019:
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2015:
2013:
2012:
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2008:Scattered disc
2005:
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1995:
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1979:
1978:
1976:Neptune trojan
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1951:Spectral types
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1941:Jupiter trojan
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989:Close approach
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816:Discovery MPEC
811:
810:External links
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730:Discovery MPEC
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502: 2015 SO2
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332:(also written
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116:31 July 2016 (
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1188:Impact events
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1066:2015 in space
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912:Physical info
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533:3753 Cruithne
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397:Aten asteroid
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299:50â111 m
298:
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294:Mean diameter
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40:Ärni Vrh Obs.
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32:
27:
16:
2098:Space debris
1814:
1773:
1763:New Horizons
1761:
1753:
1741:
1729:
1622:Tabby's Star
1393:Gliese 436 b
1357:
1113:Space probes
1024:
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947:Observations
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741:News release
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655:. Retrieved
630:
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606:. Retrieved
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547:
494:
491: Earth
483:
458:Around Earth
418:
388:
362:
324:
323:
307:
215:Mean anomaly
184:Eccentricity
54:Designations
15:
2088:Cosmic dust
2052:Long-period
2042:Halley-type
1998:Kuiper belt
1883:Designation
1770:; Jul 2015)
1612:ASASSN-15lh
1597:(announced)
1570:Discoveries
1551:51 Pegasi b
1548:spectrum of
1538:KOI-4878.01
1533:Kepler-453b
1528:Kepler-452b
1523:Kepler-451b
1496:Kepler-442b
1491:Kepler-440b
1486:Kepler-438b
1451:HIP 11915 b
1408:HD 164595 b
1403:HD 155233 b
1387:Aldebaran b
1279:1566 Icarus
939:Ephemerides
856:Ephemerides
828:data at MPC
657:16 February
381:of 9 days.
274:Earth
241:Inclination
230:Mean motion
2113:Categories
2093:Meteoroids
2072:Sungrazing
2047:Hyperbolic
2003:Oort cloud
1946:Near-Earth
1766:(flyby of
1734:(orbiting
1714:10P/Tempel
1704:(Catalina)
1683:88P/Howell
1673:15P/Finlay
1561:Wolf 1061c
1501:Kepler-444
1374:Exoplanets
692:1511.08360
589:"2015 SO2"
557:References
516:54509 YORP
480: Sun
470:Around Sun
411:episodes.
405:co-orbital
200:1.00
162:Perihelion
1983:Damocloid
1755:MESSENGER
1736:comet 67P
1699:C/2013 US
1594:EGS-zs8-1
1556:WASP-121b
1543:LkCa 15 b
1413:HD 219134
1215:Selected
1005:Ephemeris
997:Discovery
717:189842725
685:(1): 16.
359:Discovery
345:horseshoe
269:290.0678°
257:182.9293°
29:Discovery
2067:Periodic
1993:Detached
1913:Asteroid
1775:Akatsuki
1652:GW151226
1640:GW150914
1632:VFTS 352
1481:KELT-4Ab
1152:Astrosat
1089: »
978:2015 SO2
927:2015 SO2
847:2015 SO2
510:See also
419:With an
375:Slovenia
341:asteroid
336:) is an
334:2015 SO2
220:208.3767
188:0.108076
144:Aphelion
138:342 days
2032:Extinct
1971:Centaur
1731:Rosetta
1661:Comets
1617:EGSY8p7
1578:2015 BP
1358:2015 SO
1322:2007 VE
1310:2015 TB
1298:2015 TC
1286:2015 HM
1255:2015 AZ
1231:2015 BP
1076:«
980:at the
971:Summary
822:2015 SO
760:Science
697:Bibcode
608:4 April
603:3728565
390:2015 SO
364:2015 SO
326:2015 SO
245:9.1750°
67:2015 SO
20:2015 SO
2024:Comets
1936:Family
1921:Active
1888:Groups
1589:US 708
1476:K2-24c
1471:K2-24b
1466:K2-22b
1461:K2-18b
1146:DSCOVR
1025:·
1023:
1017:·
1015:
1009:·
1007:
1001:·
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967:·
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860:·
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790:Icarus
780:Icarus
770:Icarus
715:
500:
495:·
493:
489:
484:·
482:
478:
425:albedo
2081:Other
2037:Great
1780:Venus
1768:Pluto
1748:Ceres
1456:K2-3d
1027:
1019:
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955:Orbit
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713:S2CID
687:arXiv
539:Notes
497:
486:
349:Earth
114:Epoch
2057:Lost
1898:Moon
1893:List
1743:Dawn
1217:NEOs
1121:SMAP
1086:2016
1079:2014
931:ESAâ
880:MOID
659:2018
610:2016
338:Aten
314:23.9
276:MOID
92:Aten
1581:519
1325:191
1313:145
1234:513
929:at
849:at
705:doi
683:361
373:in
308:(H)
87:NEO
2115::
1819:â
1813:â
1701:10
1438:g?
1337:24
1301:25
1289:10
1270:35
1258:43
1246:86
711:.
703:.
695:.
681:.
667:^
642:^
597:.
591:.
576:^
525:16
401:AU
355:.
202:yr
154:Gm
150:AU
118:JD
1855:e
1848:t
1841:v
1778:(
1746:(
1647:)
1517:f
1514:e
1511:d
1508:c
1505:b
1445:?
1443:h
1433:f
1428:d
1423:c
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1361:2
1349:6
1059:e
1052:t
1045:v
824:2
798:2
719:.
707::
699::
689::
661:.
612:.
392:2
366:2
328:2
222:°
208:)
206:d
156:)
128:1
69:2
22:2
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