S/2017 J 11

S/2017 J 11
Discovery
Discovered by	Scott S. Sheppard
Discovery site	Las Campanas Obs.
Discovery date	25 March 2017
Orbital characteristics
	Epoch 5 May 2025 (JD 2460800.5)
Earliest precovery date	26 February 2003
Semi-major axis	0.15242864 AU (22,803,000 km)
Eccentricity	0.1737883
Orbital period (sidereal)	−700.66 d
Mean anomaly	130.38094°
Mean motion	0° 30m 49.689s / day
Inclination	164.38628° (to ecliptic)
Longitude of ascending node	245.23129°
Argument of perihelion	143.93820°
Satellite of	Jupiter
Group	Carme group
Physical characteristics
Mean diameter	1 km
Albedo	0.28 (assumed)
Apparent magnitude	24.0
Absolute magnitude (H)	17.0

Last updated September 24, 2025

S/2017 J 11 is a small outer natural satellite of Jupiter discovered by Scott S. Sheppard on 25 March 2017^[1], using the 6.5-meter Magellan-Baade Telescope at Las Campanas Observatory, Chile. It was announced by the Minor Planet Center on 30 April 2025.^[2]

S/2017 J 11 is part of the Carme group, a tight cluster of retrograde irregular moons of Jupiter that follow similar orbits to Carme at semi-major axes between 22–24 million km (14–15 million mi), orbital eccentricities between 0.1 and 0.3, and inclinations between 163 and 166°. It has a diameter of about 1 km (0.62 mi) for an absolute magnitude of 17.0, making it one of Jupiter's smallest known moons.^[2]^[3]

References

↑ "Planetary Satellite Discovery Circumstances". ssd.jpl.nasa.gov. Archived from the original on 2025-07-28. Retrieved 2025-08-30.
1 2 "MPEC 2025-H211 : S/2017 J 11". www.minorplanetcenter.net. Retrieved 2025-08-30.
↑ Sheppard, Scott S. "Scott S. Sheppard - JupiterMoons". sites.google.com. Retrieved 2025-08-30.

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[1] "Planetary Satellite Discovery Circumstances". ssd.jpl.nasa.gov. Archived from the original on 2025-07-28. Retrieved 2025-08-30.

[:0-2] 1 2 "MPEC 2025-H211 : S/2017 J 11". www.minorplanetcenter.net. Retrieved 2025-08-30.

[3] Sheppard, Scott S. "Scott S. Sheppard - JupiterMoons". sites.google.com. Retrieved 2025-08-30.

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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 S/2021 J 3 Jupiter LII Jupiter LIV Mneme Euanthe S/2003 J 16 Harpalyke Orthosie Helike S/2021 J 2 Praxidike Jupiter LXIV S/2021 J 1 S/2003 J 12 Jupiter LXVIII Thelxinoe Thyone S/2003 J 2 S/2022 J 3 Ananke Iocaste S/2017 J 10 Hermippe Jupiter LXX
Carme group (31)	S/2016 J 3 S/2022 J 1 Jupiter LXIX Pasithee S/2021 J 6 S/2003 J 24 Chaldene Jupiter LXIII Isonoe S/2017 J 11 Kallichore S/2021 J 4 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 S/2018 J 3 S/2021 J 5
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
Category

S/2017 J 11

See also

References