1603:
1908:
34:
440:
with the help of the Hubble Space
Telescope (HST) because the object has a magnitude of 27.3, which is too faint to be observed by ground-based telescopes. Preliminary observations by the HST searching for
456:
was first discovered in observations on June 24, 2014, during the preliminary observations, but it was designated 0720090F at the time, nicknamed "7" for short. Its existence as a potential target of the
476:(MPC) until March 2015 after better orbit information was available. The parameters of the orbit have the extremely large uncertainty of 9 because follow-up observations after discovery eliminated
1636:
1850:
580:
1940:
1049:
1945:
1935:
1950:
914:
509:
space probe was maneuvered for a flyby of at least one Kuiper belt object (KBO). Several targets were considered for the first such flyby. Potential target
304:
1042:
715:
1326:
816:
887:
104:
1651:
1035:
676:
1166:
872:
722:
652:
585:
1631:
49:
281:
1098:
206:
1626:
1257:
996:
1930:
1724:
413:
1709:
1359:
1083:
924:
590:
1699:
1319:
1247:
1237:
1714:
1242:
760:
61:
1349:
1078:
516:
has a diameter between 20–92 km (12–57 mi), which is smaller than the other potential targets of the
87:
616:
1860:
1262:
1146:
1058:
974:
437:
312:
235:
195:
182:
54:
836:"The Successful Search for a Post-Pluto KBO Flyby Target for New Horizons Using the Hubble Space Telescope"
1876:
1830:
1734:
1183:
401:
126:
66:
947:
1911:
1368:
1312:
1088:
293:
164:
1894:
1641:
1354:
1156:
846:
644:
217:
138:
553:, and the probe had sufficient fuel to maneuver to either PT1 or PT3. Potential target PT2, the KBO
1729:
1656:
1602:
1511:
1476:
919:
835:
473:
270:
820:
1646:
1499:
1004:
369:
357:
726:
1790:
1765:
1755:
1487:
1141:
1093:
188:
152:
988:
980:
915:"Alan Stern on Pluto's Wonders, New Horizons' Lost Twin, and That Whole "Dwarf Planet" Thing"
864:
1267:
1020:
336:
145:
969:
1750:
1407:
1188:
1131:
1116:
528:
449:
probe started in June 2014, and more intensive observations continued in July and August.
172:
1012:
850:
1887:
1785:
1704:
1203:
1171:
1136:
251:
228:
791:
1924:
1800:
1770:
1427:
1227:
1126:
1121:
422:
probe. The object measures approximately 20–90 kilometers (12–56 miles) in diameter.
1760:
1618:
1336:
1293:
1066:
711:
505:
442:
418:
244:
120:
756:
1881:
1780:
1461:
1456:
1283:
1232:
1193:
259:
1795:
1570:
1546:
1392:
1252:
1198:
555:
156:
645:"Hubble Survey Finds Two Kuiper Belt Objects to Support New Horizons Mission"
1775:
1582:
1523:
1445:
1433:
1288:
1178:
1027:
952:
544:
320:
1672:
1481:
1108:
134:
1840:
1820:
1423:
1397:
33:
1719:
1471:
1466:
680:
571:
team announced the selection of
Arrokoth as the next flyby target.
1402:
1219:
500:
520:
probe. A potential encounter initially looked more feasible for
462:
1308:
1304:
1031:
865:"Hubble to Proceed with Full Search for New Horizons Targets"
785:
783:
781:
779:
777:
564:, was eliminated for consideration as a potential target.
1851:
Cape
Canaveral Air Force Station Space Launch Complex 41
948:"Beyond Pluto: 2nd Target Chosen for New Horizons Probe"
487:
probe, and no further follow-up observations were made.
416:(KBO) and was formerly a potential flyby target for the
581:
List of minor planets and comets visited by spacecraft
538:
as a potential target. The potential targets for the
716:"New Horizons HST KBO Search Results: Status Report"
1869:
1813:
1743:
1692:
1685:
1665:
1617:
1610:
1538:
1416:
1385:
1378:
1276:
1218:
1155:
1107:
1065:
843:
European
Planetary Science Congress (EPSC) Abstract
367:
355:
334:
310:
303:
291:
279:
269:
257:
242:
226:
216:
204:
194:
181:
171:
144:
118:
102:
85:
80:
72:
60:
48:
43:
531:, but follow-up observations eventually ruled out
834:J. R. Spencer; M. W. Buie; et al. (2015).
706:
704:
702:
700:
698:
696:
694:
692:
690:
639:
637:
757:"JPL Small-Body Database Browser: (2014 MT69)"
542:probe were PT1 and PT3, the KBOs Arrokoth and
1320:
1043:
8:
611:
609:
21:
1941:Discoveries by the New Horizons KBO Search
1689:
1614:
1382:
1327:
1313:
1305:
1071:
1050:
1036:
1028:
670:
668:
666:
664:
662:
32:
1946:Discoveries by the Hubble Space Telescope
1936:Minor planet object articles (unnumbered)
751:
749:
747:
1951:Astronomical objects discovered in 2014
792:"List of Known Trans-Neptunian Objects"
605:
465:in October 2014, but the official name
20:
790:Johnston, Wm. Robert (13 July 2019).
282:Longitude of ascending node
7:
499:After having completed its flyby of
1652:Venetia Burney Student Dust Counter
978:
845:. Copernicus Office: EPSC2015-417.
913:Powell, Corey S. (29 March 2015).
14:
946:Cofield, Calla (28 August 2015).
873:Space Telescope Science Institute
723:Space Telescope Science Institute
675:Zangari, Amanda (28 March 2015).
653:Space Telescope Science Institute
586:List of missions to minor planets
16:Cold classical Kuiper belt object
1907:
1906:
1632:Long Range Reconnaissance Imager
1601:
892:to Proceed with Full Search for
900:International Space Fellowship
886:Schmidt, Klaus (2 July 2014).
1:
483:as a potential target of the
265:0° 0 12.6 ± 0° 6 46.152 / day
1725:Southwest Research Institute
725:. p. 23. Archived from
414:classical Kuiper belt object
1710:Goddard Space Flight Center
294:Argument of perihelion
1967:
1700:Applied Physics Laboratory
121:Minor planet category
1904:
1715:Jet Propulsion Laboratory
1599:
1344:
1074:
1059:Small Solar System bodies
761:Jet Propulsion Laboratory
491:Potential targets of the
382:
229:Orbital period (sidereal)
163:
151:
31:
817:"ABSOLUTE MAGNITUDE (H)"
759:(2014-08-03 last obs.).
472:was not assigned by the
370:Absolute magnitude
305:Physical characteristics
105:Alternative designations
38:Discovery image sequence
975:JPL Small-Body Database
869:HubbleSite news release
649:HubbleSite news release
567:On 28 August 2015, the
438:New Horizons KBO Search
396:(internally designated
146:Orbital characteristics
55:New Horizons KBO Search
1877:Hubble Space Telescope
1735:University of Colorado
1184:Trans-Neptunian object
677:"Postcards from Pluto"
461:probe was revealed by
436:was discovered by the
408:in the context of the
402:Hubble Space Telescope
400:in the context of the
67:Hubble Space Telescope
1369:New Frontiers program
165:Uncertainty parameter
1895:Pluto Kuiper Express
1355:Exploration of Pluto
1157:Distant minor planet
426:Discovery and naming
88:MPC designation
1931:Kuiper belt objects
1730:Stanford University
1021:Physical parameters
927:on 16 November 2019
851:2015EPSC...10..417S
714:(15 October 2014).
621:Minor Planet Center
474:Minor Planet Center
412:mission) is a cold
73:Discovery date
62:Discovery site
28:
1861:Deep Space Network
796:Johnston's Archive
358:Apparent magnitude
50:Discovered by
1918:
1917:
1856:
1846:
1836:
1826:
1809:
1808:
1681:
1680:
1597:
1596:
1302:
1301:
1214:
1213:
1099:Meanings of names
443:KBO flyby targets
386:
385:
1958:
1910:
1909:
1854:
1844:
1834:
1824:
1690:
1615:
1605:
1590:
1588:
1587:
1578:
1576:
1575:
1566:
1564:
1563:
1554:
1552:
1551:
1531:
1529:
1528:
1519:
1517:
1516:
1512:(556416) 2014 OE
1507:
1505:
1504:
1500:(516977) 2012 HZ
1495:
1493:
1492:
1488:(307261) 2002 MS
1453:
1451:
1450:
1441:
1439:
1438:
1383:
1329:
1322:
1315:
1306:
1072:
1052:
1045:
1038:
1029:
1013:Orbital elements
958:
957:
943:
937:
936:
934:
932:
923:. Archived from
910:
904:
903:
883:
877:
876:
861:
855:
854:
840:
831:
825:
824:
823:on 23 July 2011.
819:. Archived from
813:
807:
806:
804:
802:
787:
772:
771:
769:
767:
753:
742:
741:
739:
737:
731:
720:
708:
685:
684:
672:
657:
656:
641:
632:
631:
629:
627:
613:
563:
561:
560:
552:
550:
549:
537:
526:
515:
482:
471:
455:
435:
399:
394:
351:
347:
344:
337:Geometric albedo
330:
326:
323:
98:
36:
29:
27:
1966:
1965:
1961:
1960:
1959:
1957:
1956:
1955:
1921:
1920:
1919:
1914:
1900:
1865:
1805:
1751:Frances Bagenal
1739:
1677:
1661:
1606:
1593:
1585:
1584:
1581:
1573:
1572:
1569:
1561:
1560:
1557:
1549:
1548:
1545:
1534:
1526:
1525:
1522:
1514:
1513:
1510:
1502:
1501:
1498:
1490:
1489:
1486:
1448:
1447:
1444:
1436:
1435:
1432:
1412:
1408:486958 Arrokoth
1374:
1373:
1340:
1333:
1303:
1298:
1272:
1210:
1151:
1103:
1061:
1056:
966:
961:
945:
944:
940:
930:
928:
912:
911:
907:
885:
884:
880:
863:
862:
858:
838:
833:
832:
828:
815:
814:
810:
800:
798:
789:
788:
775:
765:
763:
755:
754:
745:
735:
733:
732:on 27 July 2015
729:
718:
710:
709:
688:
674:
673:
660:
643:
642:
635:
625:
623:
615:
614:
607:
603:
577:
558:
557:
554:
547:
546:
543:
536:
532:
529:486958 Arrokoth
525:
521:
514:
510:
497:
481:
477:
470:
466:
454:
450:
434:
430:
428:
397:
393:
389:
375:
360:
349:
348:
345:
342:
339:
328:
327:
324:
318:
315:
296:
284:
262:
247:
231:
209:
207:Semi-major axis
173:Observation arc
137:
123:
107:
97:
93:
90:
39:
26:
22:
17:
12:
11:
5:
1964:
1962:
1954:
1953:
1948:
1943:
1938:
1933:
1923:
1922:
1916:
1915:
1905:
1902:
1901:
1899:
1898:
1891:
1888:New Horizons 2
1884:
1879:
1873:
1871:
1867:
1866:
1864:
1863:
1858:
1848:
1838:
1828:
1825:launch vehicle
1817:
1815:
1811:
1810:
1807:
1806:
1804:
1803:
1798:
1793:
1791:Mark Showalter
1788:
1786:Daniel Sarokon
1783:
1778:
1773:
1768:
1763:
1758:
1756:Richard Binzel
1753:
1747:
1745:
1741:
1740:
1738:
1737:
1732:
1727:
1722:
1717:
1712:
1707:
1705:Ball Aerospace
1702:
1696:
1694:
1687:
1683:
1682:
1679:
1678:
1676:
1675:
1669:
1667:
1663:
1662:
1660:
1659:
1654:
1649:
1644:
1639:
1634:
1629:
1623:
1621:
1612:
1608:
1607:
1600:
1598:
1595:
1594:
1592:
1591:
1579:
1567:
1555:
1542:
1540:
1536:
1535:
1533:
1532:
1520:
1508:
1496:
1484:
1479:
1474:
1469:
1464:
1459:
1454:
1442:
1430:
1420:
1418:
1414:
1413:
1411:
1410:
1405:
1400:
1395:
1389:
1387:
1380:
1376:
1375:
1372:
1371:
1366:
1357:
1352:
1346:
1345:
1342:
1341:
1334:
1332:
1331:
1324:
1317:
1309:
1300:
1299:
1297:
1296:
1291:
1286:
1280:
1278:
1274:
1273:
1271:
1270:
1265:
1260:
1258:Near-parabolic
1255:
1250:
1245:
1240:
1235:
1230:
1224:
1222:
1216:
1215:
1212:
1211:
1209:
1208:
1207:
1206:
1204:Scattered disc
1201:
1196:
1191:
1181:
1176:
1175:
1174:
1172:Neptune trojan
1169:
1161:
1159:
1153:
1152:
1150:
1149:
1147:Spectral types
1144:
1139:
1137:Jupiter trojan
1134:
1129:
1124:
1119:
1113:
1111:
1105:
1104:
1102:
1101:
1096:
1091:
1086:
1081:
1075:
1069:
1063:
1062:
1057:
1055:
1054:
1047:
1040:
1032:
1026:
1025:
1024:
1023:
981:Close approach
965:
964:External links
962:
960:
959:
938:
905:
878:
875:. 1 July 2014.
856:
826:
808:
773:
743:
686:
658:
655:. 1 July 2014.
633:
604:
602:
599:
598:
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155:18 July 2014 (
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119:
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110:0720090F
108:
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99:
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86:
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78:
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74:
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69:
64:
58:
57:
52:
46:
45:
41:
40:
37:
24:
15:
13:
10:
9:
6:
4:
3:
2:
1963:
1952:
1949:
1947:
1944:
1942:
1939:
1937:
1934:
1932:
1929:
1928:
1926:
1913:
1903:
1897:
1896:
1892:
1890:
1889:
1885:
1883:
1880:
1878:
1875:
1874:
1872:
1868:
1862:
1859:
1852:
1849:
1842:
1839:
1832:
1829:
1822:
1819:
1818:
1816:
1812:
1802:
1799:
1797:
1794:
1792:
1789:
1787:
1784:
1782:
1779:
1777:
1774:
1772:
1771:Lisa Hardaway
1769:
1767:
1764:
1762:
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1703:
1701:
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1671:
1670:
1668:
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1630:
1628:
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1613:
1609:
1604:
1589:
1580:
1577:
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1565:
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1537:
1530:
1521:
1518:
1509:
1506:
1497:
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1470:
1468:
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1401:
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1391:
1390:
1388:
1384:
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1377:
1370:
1367:
1365:
1363:
1358:
1356:
1353:
1351:
1348:
1347:
1343:
1339:
1338:
1330:
1325:
1323:
1318:
1316:
1311:
1310:
1307:
1295:
1292:
1290:
1287:
1285:
1282:
1281:
1279:
1275:
1269:
1266:
1264:
1261:
1259:
1256:
1254:
1251:
1249:
1246:
1244:
1241:
1239:
1236:
1234:
1231:
1229:
1226:
1225:
1223:
1221:
1217:
1205:
1202:
1200:
1197:
1195:
1192:
1190:
1187:
1186:
1185:
1182:
1180:
1177:
1173:
1170:
1168:
1165:
1164:
1163:
1162:
1160:
1158:
1154:
1148:
1145:
1143:
1140:
1138:
1135:
1133:
1130:
1128:
1127:Asteroid belt
1125:
1123:
1122:Aten asteroid
1120:
1118:
1115:
1114:
1112:
1110:
1106:
1100:
1097:
1095:
1092:
1090:
1087:
1085:
1082:
1080:
1077:
1076:
1073:
1070:
1068:
1067:Minor planets
1064:
1060:
1053:
1048:
1046:
1041:
1039:
1034:
1033:
1030:
1022:
1018:
1014:
1010:
1006:
1005:Orbit diagram
1002:
998:
994:
990:
986:
982:
979:
977:
976:
971:
968:
967:
963:
955:
954:
949:
942:
939:
926:
922:
921:
916:
909:
906:
901:
897:
895:
891:
882:
879:
874:
870:
866:
860:
857:
852:
848:
844:
837:
830:
827:
822:
818:
812:
809:
797:
793:
786:
784:
782:
780:
778:
774:
762:
758:
752:
750:
748:
744:
728:
724:
717:
713:
707:
705:
703:
701:
699:
697:
695:
693:
691:
687:
682:
678:
671:
669:
667:
665:
663:
659:
654:
650:
646:
640:
638:
634:
622:
618:
612:
610:
606:
600:
596:
594:
589:
587:
584:
582:
579:
578:
574:
572:
570:
565:
562:
551:
541:
530:
519:
508:
507:
502:
494:
490:
488:
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329:27–92 km
322:
317:
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313:Mean diameter
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1893:
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1761:Alice Bowman
1693:Institutions
1558:
1417:Observations
1362:New Horizons
1361:
1337:New Horizons
1335:
1294:Space debris
1016:
1008:
1000:
992:
984:
973:
951:
941:
929:. Retrieved
925:the original
918:
908:
899:
894:New Horizons
893:
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868:
859:
842:
829:
821:the original
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795:
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727:the original
648:
624:. Retrieved
620:
593:New Horizons
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569:New Horizons
568:
566:
540:New Horizons
539:
518:New Horizons
517:
506:New Horizons
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498:
493:New Horizons
492:
485:New Horizons
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459:New Horizons
458:
447:New Horizons
446:
429:
419:New Horizons
417:
410:New Horizons
409:
405:
388:
387:
371:
245:Mean anomaly
218:Eccentricity
130:
111:
81:Designations
76:24 June 2014
18:
1882:Kuiper belt
1855:launch site
1835:upper stage
1781:Cathy Olkin
1619:Instruments
1462:28978 Ixion
1457:15810 Arawn
1284:Cosmic dust
1248:Long-period
1238:Halley-type
1194:Kuiper belt
1079:Designation
801:19 December
766:19 December
626:19 December
617:"2014 MT69"
271:Inclination
260:Mean motion
238:(103,822 d)
1925:Categories
1801:Hal Weaver
1796:Alan Stern
1666:Subsystems
1611:Spacecraft
1393:132524 APL
1289:Meteoroids
1268:Sungrazing
1243:Hyperbolic
1199:Oort cloud
1142:Near-Earth
712:Buie, Marc
601:References
196:Perihelion
159:2456856.5)
1845:3rd stage
1814:Logistics
1776:Brian May
1766:Marc Buie
1686:Personnel
1179:Damocloid
997:Ephemeris
989:Discovery
970:2014 MT69
953:Space.com
527:than for
350:0.04–0.15
212:43.231 AU
200:38.741 AU
44:Discovery
1912:Category
1841:Star 48B
1673:GPHS-RTG
1539:Rejected
1482:Makemake
1360:List of
1350:Timeline
1263:Periodic
1189:Detached
1109:Asteroid
920:Discover
896:Targets"
591:List of
575:See also
445:for the
398:0720090F
319:20
183:Aphelion
135:cubewano
1870:Related
1831:Centaur
1821:Atlas V
1583:2014 PN
1571:2014 OS
1559:2014 MT
1547:2011 HM
1524:2012 HE
1446:2011 KW
1434:2011 JY
1424:Neptune
1398:Jupiter
1379:Targets
1228:Extinct
1167:Centaur
972:at the
847:Bibcode
556:2014 OS
545:2014 PN
533:2014 MT
522:2014 MT
511:2014 MT
495:mission
478:2014 MT
467:2014 MT
451:2014 MT
431:2014 MT
390:2014 MT
299:235.94°
287:140.95°
275:3.2251°
234:284.25
187:47.720
177:40 days
139:distant
94:2014 MT
23:2014 MT
1744:People
1720:KinetX
1637:PEPSSI
1472:Haumea
1467:Quaoar
1428:Triton
1386:Flybys
1364:topics
1220:Comets
1132:Family
1117:Active
1084:Groups
1017:·
1015:
1009:·
1007:
1001:·
999:
993:·
991:
985:·
983:
890:Hubble
736:10 May
681:Tumblr
595:topics
503:, the
404:, and
346:(est.)
325:(est.)
250:275.33
222:0.1038
131:·
129:
114: 7
112:·
1642:Ralph
1627:Alice
1403:Pluto
1277:Other
1233:Great
1019:
1011:
1003:
995:
987:
931:9 May
839:(PDF)
730:(PDF)
719:(PDF)
501:Pluto
153:Epoch
133:
1657:SWAP
1477:Eris
1426:and
1253:Lost
1094:Moon
1089:List
933:2015
803:2019
768:2019
738:2015
628:2019
463:NASA
378:11.7
363:27.4
343:0.09
1647:REX
1574:393
1550:102
1515:394
559:393
372:(H)
127:TNO
1927::
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321:km
236:yr
189:AU
157:JD
96:69
25:69
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252:°
167:9
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