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S/2011 J 3

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Outer moon of Jupiter

S/2011 J 3
Discovery^[1]
Discovered by	Scott S. Sheppard
Discovery site	Las Campanas Obs.
Discovery date	27 September 2011
Orbital characteristics^[1]^[2]
Epoch 9 August 2022 (JD 2459800.5)
Observation arc	10.98yr (4,009d) 2022-09-18 (last obs)
Semi-major axis	0.0788592 AU (11,797,170 km)
Eccentricity	0.1757518
Orbital period (sidereal)	+261.77 days
Mean anomaly	215.57916°
Mean motion	1° 22^m 30.884^s / day
Inclination	28.65923°(toecliptic)
Longitude of ascending node	97.75374°
Argument of perihelion	222.10770°
Satellite of	Jupiter
Group	Himalia group
Physical characteristics
Mean diameter	≈3 km^[3]
Albedo	0.04(assumed)^[3]
Apparent magnitude	23.1^[3]
Absolute magnitude (H)	16.3 (41 obs)^[1]

S/2011 J 3 is a small outernatural satellite of Jupiter discovered byScott S. Sheppard on 27 September 2011, using the 6.5-meterMagellan-Baade Telescope atLas Campanas Observatory,Chile. It was announced by theMinor Planet Center 11 years later on 20 December 2022, after observations were collected over a long enough time span to confirm the satellite's orbit.^[1]

S/2011 J 3 is part of theHimalia group, a tight cluster ofprograde irregular moons of Jupiter that follow similar orbits toHimalia atsemi-major axes between 11–12 million km (6.8–7.5 million mi) andinclinations between 26–31°.^[3] With an estimated diameter of 3 km (1.9 mi) for anabsolute magnitude of 16.3, it is among the smallest known members of the Himalia group.^[3]

References

[edit]

^^a ^b ^c ^d"MPEC 2022-Y69 : S/2011 J 3".Minor Planet Electronic Circulars. Minor Planet Center. 20 December 2022. Retrieved20 December 2022.
^"Planetary Satellite Discovery Circumstances".JPL Solar System Dynamics. NASA. Retrieved20 December 2022.
^^a ^b ^c ^d ^eSheppard, Scott S."Moons of Jupiter".Earth & Planets Laboratory. Carnegie Institution for Science. Retrieved20 December 2022.

v t e Moons of Jupiter
Listed in increasing approximate distance from Jupiter
Inner moons	Metis Adrastea Amalthea Thebe
Galilean moons	Io Europa Ganymede Callisto
Themisto	Themisto
Himalia group (9)	Leda Ersa S/2018 J 2 Himalia Pandia Lysithea Elara S/2011 J 3 Dia
Carpo group (2)	S/2018 J 4 Carpo
Valetudo	Valetudo
Ananke group (27)	Euporie Jupiter LV Eupheme Jupiter LII Jupiter LIV Mneme Euanthe S/2003 J 16 Harpalyke Orthosie Helike Praxidike Jupiter LXIV S/2003 J 12 Jupiter LXVIII Thelxinoe Thyone Ananke Iocaste Hermippe Jupiter LXX +6 moons
Carme group (31)	Jupiter LXIX Pasithee S/2003 J 24 Chaldene Jupiter LXIII Isonoe Kallichore Erinome Kale Eirene Aitne Eukelade S/2022 J 2 Arche Taygete Jupiter LXXII Carme Herse Jupiter LXI Jupiter LI S/2003 J 9 Jupiter LXVI Kalyke S/2003 J 10 +7 moons
Pasiphae group (18)	Philophrosyne Eurydome Jupiter LVI S/2003 J 4 S/2016 J 4 Jupiter LXVII Hegemone Pasiphae Sponde Megaclite Cyllene Sinope Jupiter LIX Aoede Autonoe Callirrhoe S/2003 J 23 Kore
See also	Rings of Jupiter Jupiter's moons in fiction
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