Autonoe (moon)
Autonoe | |
---|---|
Provisional or systematic name | S / 2001 J 1 |
Central body | Jupiter |
Properties of the orbit | |
Major semi-axis | 23,039,000 km |
Periapsis | 15,344,000 km |
Apoapsis | 30,734,000 km |
eccentricity | 0.334 |
Orbit inclination | 152.9 ° |
Orbital time | 762.70 d |
Mean orbital velocity | 2.20 km / s |
Physical Properties | |
Albedo | 0.04 |
Apparent brightness | 22.0 likes |
Medium diameter | 4 km |
Dimensions | 9.0 × 10 13 kg |
Acceleration of gravity on the surface | ≈ 0 m / s 2 |
Escape speed | ≈ 0 m / s |
discovery | |
Explorer | |
Date of discovery | December 10, 2001 |
Autonoe (also Jupiter XXVIII) is one of the smaller outer moons of the planet Jupiter .
discovery
Autonoe was discovered by astronomers at the University of Hawaii on December 10, 2001 . It was initially given the provisional designation S / 2001 J 1.
The moon was named after Autonoë , the sister of Semele , a lover of Zeus from Greek mythology .
Orbit data
Autonoe orbits Jupiter at a mean distance of 23,039,000 km in 762 days and 17 hours. The track has an eccentricity of 0.334. With an inclination of 152.9 ° the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.
Due to its orbital properties, Autonoe is assigned to the Pasiphae group , named after the Jupiter moon Pasiphae .
Physical data
Autonoe has a mean diameter of about 4 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Autonoe has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected. Their apparent brightness is 22.0 m .
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-V03: S / 2001 J 1 November 1, 2002 (rediscovery)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
before | Jupiter moons | after that |
Practice | Autonoe |
Thyone |