- Additional Information
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Additional Information
Short Description Elara is a prograde irregular satellite of Jupiter. It has a mean radius of just 43 km, thus it is 2% of the size of Europa. However it is half the size of Himalia, so it is the second biggest moon in the Himalia group. It might be a captured type C or D asteroid, for it reflects very little light. Its orbital elements are as of January 2000. They are continuously changing due to solar and planetary perturbations. Elara (moon) - Wikipedia, the free encyclopedia Discovered by Charles Dillon Perrine Discovery date January 5, 1905 Type Moon AddInfo Jupiter VII Satellite of Jupiter Orbit Prograde Rotation Direct Apoapsis 08 14 293 500 km Periapsis 07 9 188 500 km Semi-major axis 08 11 741 000 km Distance from Sun 01 5.202 60 au /13 Eccentricity 0.217 4 Orbital period 259.64 days | 0.708 year Orbital speed 01 3.27 km/s Inclination to the ecliptic 026.63° Inclination to the equator 030.66° Diameter/Size 02 86 km Mass 1017×8.7 kg Density 01 2.6 g/cm3 Surface gravity 0.031m/s2 Escape velocity 02 52 m/s Rotation period 0.5 day | 12 hours Albedo geometric 0.04 Temperature mean 03 124 K Apparent magnitude 16.3 - Comments
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