Erinome (moon)
Erinome | |
---|---|
Provisional or systematic name | S / 2000 J 4 |
Central body | Jupiter |
Properties of the orbit | |
Major semi-axis | 23,279,000 km |
Periapsis | 17,087,000 km |
Apoapsis | 29,471,000 km |
eccentricity | 0.266 |
Orbit inclination | 164.90 ° |
Orbital time | 728.30 d |
Mean orbital velocity | 2.32 km / s |
Physical Properties | |
Albedo | 0.04 |
Apparent brightness | 22.8 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 | November 23, 2000 |
Remarks | retrograde orbit |
Erinome (also Jupiter XXV) is one of the smaller outer moons of the planet Jupiter .
discovery
Erinome was discovered by astronomers at the University of Hawaii on November 23, 2000 . It was initially given the provisional designation S / 2000 J 4.
The moon was named after Erinoma from Greek mythology , the daughter of Celes , who was urged to love Zeus .
Orbit data
Erinome orbits Jupiter at a mean distance of 23,196,000 km in 728 days, 12 hours and 14 minutes. The track has an eccentricity of 0.2665. With an inclination of 164.934 °, the orbit is retrograde; H. the moon moves against the direction of rotation of Jupiter around the planet.
Due to its orbital properties, Erinome is assigned to the Carme group , named after the Jupiter moon Carme .
Physical data
Erinome has a mean diameter of about 3 km. Its density is estimated at 2.6 g / cm³, which is derived from the assumption of a structure of predominantly silicate rock. Erinome has a very dark surface with an albedo of 0.04, i.e. that is, only 4% of the incident sunlight is reflected. The apparent brightness is 22.8 m .
Web links
- IAUC 7555: Satellites of Jupiter January 5, 2001 (discovery)
- MPEC 2001-A28: S / 2000 J 2, S / 2000 J 3, S / 2000 J 4, S / 2000 J 5, S / 2000 J 6 January 5, 2001 (discovery)
- MPEC 2001-W33: S / 2000 J 4 November 20, 2001 (rediscovery)
- IAUC 7998: Satellites of Jupiter October 22, 2002 (numbering and naming)
before | Jupiter moons | after that |
Iocaste | Erinome |
Isonoe |