S/2003 J 12

S/2003 J 12 is a natural satellite of Jupiter, and is the smallest known satellite in the Solar System. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.^[2][3]

S/2003 J 12 is about 1 kilometre (0.6 miles) in diameter, and orbits Jupiter at an average distance of 17,883 Mm in 489.72 days, at an inclination of 143° to the ecliptic (143° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.4920.^[1]

It is the innermost of the outer irregular retrograde satellites of Jupiter, and does not seem to belong to any group.

References

v t e Moons of Jupiter Listed in approximately increasing distance from Jupiter. Temporary names in italics. Inner moons Metis Adrastea Amalthea Thebe Galilean moons Io Europa Ganymede Callisto Themisto group Themisto Himalia group Leda Himalia Lysithea Elara S/2000 J 11 Carpo group Carpo   S/2003 J 12   S/2011 J 1 Ananke group core Ananke Praxidike Harpalyke Iocaste Euanthe Thyone peripheral Euporie S/2003 J 3 S/2003 J 18 S/2010 J 2 Thelxinoe Helike Orthosie S/2003 J 16 Hermippe Mneme S/2003 J 15 Carme group Herse S/2003 J 10 Pasithee Chaldene Arche Isonoe Erinome Kale Aitne Taygete S/2003 J 9 Carme S/2003 J 5 S/2003 J 19 Kalyke Eukelade Kallichore Pasiphaë group Eurydome S/2003 J 23 Hegemone Pasiphae Sponde Cyllene Megaclite S/2003 J 4 Callirrhoe Sinope Autonoe Aoede S/2011 J 2 S/2010 J 1 Kore   S/2003 J 2 Rings of Jupiter In fiction