Euporia (moon)
Euporia | |
---|---|
Provisional or systematic name | S / 2001 J 10 |
Central body | Jupiter |
Properties of the orbit | |
Major semi-axis | 19,304,000 km |
Periapsis | 16,540,000 km |
Apoapsis | 22,068,000 km |
eccentricity | 0.1432 |
Orbit inclination | 145.767 ° |
Orbital time | 550.74 d |
Mean orbital velocity | 2.54 km / s |
Physical Properties | |
Albedo | 0.04 |
Apparent brightness | 23.1 mag |
Medium diameter | ≈ 2 km |
Dimensions | 1 × 10 13 kg |
Medium density | 2.6 g / cm 3 |
Acceleration of gravity on the surface | ≈ 0 m / s 2 |
Escape speed | ≈ 0 m / s |
discovery | |
Explorer | |
Date of discovery | December 11, 2001 |
Eupory (also Jupiter XXXIV) is one of the smallest known outer moons of the planet Jupiter .
discovery
Euporie was discovered on December 11, 2001 by astronomers at the University of Hawaii. It was initially given the provisional designation S / 2001 J 10.
The moon was named after Euporie , one of the Horen from the Greek mythology .
Orbit data
Euporie orbits Jupiter at an average distance of 19,304,000 km in 550.74 days. The track has an eccentricity of 0.1432. With an orbit inclination of 145.8 ° to the local Laplace plane , the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.
Due to its orbital properties, Euporie is assigned to the Ananke group , named after the Jupiter moon Ananke . She is the innermost representative of this group.
Physical data
Euporie has a mean diameter of about 2 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. Euporie 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 23.1 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 2003-C53: S / 2001 J 10 February 10, 2003 (rediscovery)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
before | Jupiter moons | after that |
Euanthe | Euporia |
Orthosia |