Discovery | |
---|---|
Discovered by | Scott S. Sheppard et al. |
Discovery date | 2000 |
Orbital characteristics | |
Mean orbit radius | 12.555 million km |
Eccentricity | 0.248 |
Inclination | 28° |
Satellite of | Jupiter |
Physical characteristics | |
Mean radius | ~2 km |
Dia (S/2000 J 11) ls the second-outermost prograde non-spherical moon of Jupiter. It was found by a team of astronomers from the University of Hawaii led by Scott S. Sheppard in 2000.[1][2]
Dia is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 12,555,000 km in 287 days, at an inclination of 28° (to Jupiter's equator), and with an orbital eccentricity of 0.248.[3]
The moon is included in the Himalia group.[4] After discovery it was lost for ten years because the orbit was poorly known. Recovery allowed much better precision.