538:
29:
1545:
573:, where more than twenty tweets suggested the name, including Aaron Quah (@8603103) who submitted the name first, StSauveur_MoonsProject (@StSauMoons) that are the 12th grade students of Saint Sauveur High School in
1586:
877:
1591:
542:
1596:
140:
589:(submitted on their behalf by @mrgrouchypants), and a 4-year-old child who sang a song about Ersa (submitted on his behalf by @Thoreson).
495:, after observations were collected over a long enough time span to confirm the satellite's orbit. The satellite has been found in
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34:
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620:. Like all of Jupiter's irregular moons, Ersa orbits far enough away that it is highly subject to gravitational
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565:(Jupiter L) is also named for this goddess. The name was suggested in a naming contest held by the
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by the Sun and other planets, which makes its orbit highly variable over time.
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between 26–31°. With an estimated diameter of 3 km (1.9 mi) for an
484:. It was announced alongside nine other Jovian moons on 17 July 2018 and was
1469:
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of 15.9, it is one of the smallest known members of the
Himalia group.
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205:
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between 11–12 million km (6.8–7.5 million mi) and
1464:
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328:
835:"Public Contest Successfully Finds Names For Jupiter's New Moons"
554:
550:
129:
859:
318:
180:
796:"Planetary Names: Planet and Satellite Names and Discoverers"
442:
106:
448:
112:
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Listed in increasing approximate distance from
Jupiter
810:"Naming Contest for Newly-discovered Moons of Jupiter"
612:
of about 11,401,000 km (7,084,000 mi) at an
581:, the fifth grade at Hillside Traditional Academy in
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711:. Minor Planet Center. 19 July 2022. p. 710
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673:"Planetary Satellite Discovery Circumstances"
8:
21:
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541:Animation of Ersa precovery images by the
27:
513:of Jupiter that follow similar orbits to
553:, the Greek goddess of dew, daughter of
499:observations as early as 6 August 2000.
1587:Astronomical objects discovered in 2018
633:
20:
608:On average, Ersa orbits Jupiter at a
33:Precovery image of Ersa taken by the
7:
472:on 11 May 2018, using the 4.0-meter
734:"Planetary Satellite Mean Elements"
653:. Minor Planet Center. 17 July 2018
616:of about 29.1° with respect to the
776:. Carnegie Institution for Science
14:
651:Minor Planet Electronic Circulars
647:"MPEC 2018-O18 : S/2018 J 1"
549:The moon was named in 2019 after
239:11,401,000 km (0.07621
1592:Discoveries by Scott S. Sheppard
1544:
1543:
596:which are given names ending in
435:
99:
774:Earth & Planets Laboratory
35:Canada-France-Hawaii Telescope
1:
1597:Moons with a prograde orbit
592:It belongs to the prograde
1613:
1531:Jupiter's moons in fiction
474:Víctor M. Blanco Telescope
1539:
893:
738:JPL Solar System Dynamics
677:JPL Solar System Dynamics
425:
157:
26:
486:provisionally designated
478:Cerro Tololo Observatory
413:Absolute magnitude
366:Physical characteristics
347:Precession of the
225:Proper orbital elements
152:Orbital characteristics
546:
709:Minor Planet Circular
540:
506:, a tight cluster of
16:Outer moon of Jupiter
1582:Irregular satellites
502:Ersa is part of the
768:Sheppard, Scott S.
545:on 24 February 2003
493:Minor Planet Center
460:, is a small outer
349:ascending node
72:Discovery date
61:Discovery site
23:
770:"Moons of Jupiter"
567:Carnegie Institute
547:
527:absolute magnitude
456:, also designated
401:Apparent magnitude
49:Discovered by
1559:
1558:
470:Scott S. Sheppard
462:natural satellite
429:
428:
201:Satellite of
141:Alternative names
66:Cerro Tololo Obs.
54:Scott S. Sheppard
1604:
1577:Moons of Jupiter
1547:
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1526:Rings of Jupiter
887:Moons of Jupiter
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583:British Columbia
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292:527.587231
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161:1 January 2000 (
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37:in February 2003
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702:"M.P.C. 141872"
700:
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610:semi-major axis
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519:semi-major axes
511:irregular moons
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171:Observation arc
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1195:Jupiter LXVIII
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1421:Philophrosyne
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992:Himalia group
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622:perturbations
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594:Himalia group
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504:Himalia group
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420:
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405:
402:
397:
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388:
384:
377:
374:
373:Mean diameter
369:
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218:Himalia group
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195:6 August 2000
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95:Pronunciation
93:
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58:
55:
52:
50:
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41:
36:
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25:
19:
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1456:
1455:
1382:Jupiter LXVI
1353:
1352:
1273:Jupiter LXIX
1215:
1214:
1180:Jupiter LXIV
1096:Ananke group
1066:
1065:
1016:
1015:
1005:
963:
956:
949:
942:
895:
842:. Retrieved
838:
829:
817:. Retrieved
813:
804:
790:
778:. Retrieved
773:
742:. Retrieved
737:
713:. Retrieved
708:
681:. Retrieved
676:
667:
655:. Retrieved
650:
607:
597:
591:
548:
523:inclinations
501:
488:
458:Jupiter LXXI
457:
431:
430:
414:
358: /
338: /
296: /
254:eccentricity
132:
90:Jupiter LXXI
80:Designations
18:
1505:S/2003 J 23
1485:Jupiter LIX
1431:Jupiter LVI
1402:S/2003 J 10
1367:Jupiter LXI
1283:S/2003 J 24
1244:Carme group
1234:Jupiter LXX
1190:S/2003 J 12
1145:S/2003 J 16
1130:Jupiter LIV
1125:Jupiter LII
903:Inner moons
839:www.iau.org
814:www.iau.org
614:inclination
287:mean motion
267:inclination
125:Named after
86:Designation
75:11 May 2018
1566:Categories
1500:Callirrhoe
1441:S/2016 J 4
1436:S/2003 J 4
1397:S/2021 J 5
1392:S/2018 J 3
1377:S/2003 J 9
1372:Jupiter LI
1308:Kallichore
1303:S/2021 J 4
1278:S/2021 J 6
1263:S/2016 J 3
1258:S/2022 J 2
1253:S/2022 J 1
1210:S/2003 J 2
1185:S/2021 J 1
1170:S/2021 J 2
1160:S/2022 J 3
1120:S/2021 J 3
1110:Jupiter LV
1061:S/2018 J 4
1040:S/2011 J 3
1011:S/2018 J 2
628:References
489:S/2018 J 1
329:perihelion
165:2451545.0)
146:S/2018 J 1
1470:Megaclite
1200:Thelxinoe
1175:Praxidike
1150:Harpalyke
844:27 August
819:27 August
744:9 January
715:9 January
683:9 January
497:precovery
393:(assumed)
380:3 km
317:(249.229
190:precovery
188:Earliest
43:Discovery
1550:Category
1519:See also
1458:Pasiphae
1451:Hegemone
1426:Eurydome
1333:Eukelade
1288:Chaldene
1268:Pasithee
1229:Hermippe
1155:Orthosie
1086:Valetudo
1079:Valetudo
1030:Lysithea
982:Themisto
975:Themisto
965:Callisto
958:Ganymede
920:Amalthea
915:Adrastea
618:ecliptic
508:prograde
312:0.68235
276:ecliptic
1495:Autonoe
1475:Cyllene
1343:Taygete
1313:Erinome
1224:Iocaste
1140:Euanthe
1115:Eupheme
1105:Euporie
1018:Himalia
780:18 July
657:17 July
571:Twitter
515:Himalia
491:by the
466:Jupiter
305:Proper
285:Proper
265:Proper
252:Proper
243:)
232:Proper
206:Jupiter
179:(7,701
1480:Sinope
1465:Sponde
1387:Kalyke
1323:Eirene
1298:Isonoe
1217:Ananke
1205:Thyone
1165:Helike
1025:Pandia
951:Europa
740:. NASA
679:. NASA
587:Canada
579:France
559:Selene
387:Albedo
356:arcsec
336:arcsec
272:29.1°
175:21.08
1490:Aoede
1362:Herse
1355:Carme
1338:Arche
1328:Aitne
1135:Mneme
1068:Carpo
1035:Elara
925:Thebe
910:Metis
705:(PDF)
604:Orbit
575:Redon
563:Herse
482:Chile
391:0.04
259:0.116
213:Group
159:Epoch
1510:Kore
1414:(18)
1318:Kale
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555:Zeus
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421:15.9
406:22.9
274:(to
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