Aitne (moon)
| Aitne | |
|---|---|
| Provisional or systematic name | Jupiter XXXI |
| Central body | Jupiter |
| Properties of the orbit | |
| Major semi-axis | 23,229,000 km |
| Periapsis | 15,870,053 km |
| Apoapsis | 30,587,947 km |
| eccentricity | 0.3168 |
| Orbit inclination | 165.091 ° |
| Orbital time | 730.18 d |
| Mean orbital velocity | 2.31 km / s |
| Physical Properties | |
| Albedo | 0.04 |
| Apparent brightness | 22.7 mag |
| Medium diameter | ≈ 3 km |
| Dimensions | ≈ 4.5 · 10 13 kg |
| Acceleration of gravity on the surface | ≈ 0 m / s 2 |
| Escape speed | ≈ 0 m / s |
| discovery | |
| Explorer | |
| Date of discovery | December 9, 2001 |
Aitne (also Jupiter XXXI ) is one of the smaller, outer moons of the planet Jupiter .
discovery
Aitne was discovered by astronomers at the University of Hawaii on December 9, 2001 . It was initially given the provisional designation S / 2001 J 11.
The moon was named after the goddess Aitne from Greek mythology , the personification of the mountains.
Orbit data
Aitne orbits Jupiter at an average distance of 23,229,000 km in 730 days, 4 hours and 19 minutes. The track has an eccentricity of 0.2643. With an inclination of 165.091 ° the orbit is retrograde , that is, the moon moves around the planet against the direction of rotation of Jupiter.
Due to its orbit characteristics, Aitne is assigned to the Carme group , which is named after the Jupiter moon Carme .
Physical data
Aitne has an average diameter of about 3 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Aitne has a very dark surface with an albedo of 0.04.
Web links
- MPEC 2002-J54: Eleven new Satellites of Jupiter May 15, 2002 (discovery)
- IAUC 7900: Satellites of Jupiter May 16, 2002 (discovery)
- MPEC 2002-V18: S / 2001 J 11 November 4, 2002 (rediscovery)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
| before | Jupiter moons | after that |
| Hermippe | Aitne |
Eurydome |