S/2003 J 12
S/2003 J 12 is a moon of Jupiter, and is one of the smallest known. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2003.[1][2]
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard et al. |
| Discovery date | 2003 |
| Orbital characteristics | |
Mean orbit radius | 17.740 million km |
| Eccentricity | 0.4449 |
| 482.691 days | |
| Inclination | 143° |
| Physical characteristics | |
Mean radius | ~0.5 km |
S/2003 J 12 is about 1 kilometre in diameter, and orbits Jupiter at an average distance of 17,740,000 km in 482.691 days, at an inclination of 143° to the ecliptic (143° to Jupiter's equator), with an orbital eccentricity of 0.4449.
It is the closest of the farther non-spherical retrograde moons of Jupiter, and does not seem to belong to any group.
S/2003 J 12 Media
Blink animation of S/2003 J 12 in CFHT precovery images from December 2001
Recovery images of S/2003 J 12 taken by the CFHT in August 2011
References
- ↑ IAUC 8089: Satellites of Jupiter 2003 March 7 (discovery)
- ↑ MPEC 2003-E29: S/2003 J 9, 2003 J 10, 2003 J 11, 2003 J 12; S/2003 J 1, 2003 J 6 2003 April 3 (discovery and ephemeris)
