Elara
Elara is the thirteenth known moon of Jupiter; also called Jupiter VII.
| discovery | 1905, by Charles Perrine |
| semimajor axis | 11,788,000 km (7,326,000 mi) |
| diameter | 86 km (53 mi) |
| mean density | 2.6 g/cm3 |
| escape velocity | 0.022 km/s (79 km/h, 49 mph) |
| orbital period | 261.14 days |
| orbital eccentricity | 0.195 |
| orbital inclination | 29.69° |
| visual albedo | 0.04 |
