Name |
Diameter |
Orbit million km |
Period |
||
| Ananke | 28 km | 21.3 | 610.5 days | In fact, its highly eccentric orbit varies between 12.6 and 29.1 million km. | |
| Praxidike | 7 km | 20.8 | 625.4 days | I am not sure of the significance, but the moon is named for Praxidike, the Greek goddess of punishment. |
|
| Iocaste | 5 km | 20.7 | 609.4 days | ||
| Harpalyke | 4 km | 21.1 | 624.5 days | ||
| Thyone | 4 km | 21.4 | 639.8 days | ||
| Euanthe | 3 km | 20.5 | 598.1 days | ||
| Euporie | 2 km | 19.1 | 538.8 days | ||
| Helike | 4 km | 20.5 | 601.4 days | ||
| Hermippe | 4 km | 21.2 | 629.8 days | ||
| Mneme | 2 km | 21.4 | 640.8 days | ||
| Orthosie | 2 km | 20.6 | 622.6 days | ||
| Thelxinoe | 2 km | 20.5 | 628.1 days | Period was quoted as 597.6 days; new figure is from NASA. | |
| Eupheme | 2 km | 19.6 | 561.5 days | Named in 2019 after the ancient Greek spirit of words of good omen, praise, acclaims, shouts of triumph, and applause, the daughter of Hephaestus and Aglaea and granddaughter of Zeus.[ |
Solar System -
Jupiter's Moons
Ananke Group
The Ananke Group of retrograde, irregular moons comprises at least fifteen known moons, though not all have been named. All these moons orbit Jupiter at average distances between 19.3 and 22.7 million km (14.2 and 15 million miles). The orbits are highly eccentric, and continuously changing due to perturbation from the Sun and the other planets. It is likely that the Ananke group formed when a captured asteroid broke up as a result of a low velocity collision. The orbits and inclinations of the various moons are very similar. Where color measurements have been obtained, they are, again, very similar. It is likely that Ananke was the parent, and the other moons broke off.
Inner Moons • Io • Europa • Ganymede • Callisto • Himalia Group • Carme Group • Ananke Group • Pasiphae Group • Miscellaneous
Jupiter's moons are grouped as follows. Select to see details of the moon or the group of moons:
