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Encyclopedia > Jupiter > Satellites > Ananke
THE OUTER SATELLITES OF JUPITER :
"PASIPHAE" FAMILY: ANANKE (J-12)
| Characteristics | Values |
|---|---|
| distance to Jupiter | 21 048 000 km |
| average size | 20 km |
| visual magnitude | 18.9 |
| revolution period | 624 days |
| orbital velocity | 2 km/s |
| inclination of the orbit on the equator Jupiter |
155°(retrograde) |
| eccentricity of the orbit | 0.08 à 0.45 |
| density (water=1) | 9.1 |
| escape velocity | 18 m/s |
Ananke (Jupiter XII) was discovered by Nicholson in 1951. Its orbital period is 624 days. Its rotation around Jupiter is retrograde as the satellites Pasiphae family. These are probably captured asteroids.