Cyllene (moon)
| Cyllene | |
|---|---|
| Provisional or systematic name | S / 2003 J 13 |
| Central body | Jupiter |
| Properties of the orbit | |
| Major semi-axis | 24,349,000 km |
| Periapsis | 16,582,000 km |
| Apoapsis | 32,116,000 km |
| eccentricity | 0.319 |
| Orbit inclination | 149.3 ° |
| Orbital time | 737.8 d |
| Mean orbital velocity | 2.34 km / s |
| Physical Properties | |
| Apparent brightness | 23.2 mag |
| Medium diameter | ≈ 2 km |
| Dimensions | ≈ 1.4987 10 13 kg |
| Acceleration of gravity on the surface | ≈ 0 m / s 2 |
| Escape speed | ≈ 0 m / s |
| discovery | |
| Explorer | |
| Date of discovery | February 8, 2003 |
Cyllene (Jupiter XLVIII) is one of the smaller moons of the planet Jupiter .
discovery
Cyllene was discovered by astronomers at the University of Hawaii on February 8, 2003 . The moon received its official name (after the nymph Kyllene ) on March 30, 2005 by the International Astronomical Union (IAU).
Orbit data
Cyllene orbits Jupiter at a mean distance of 24,349,000 km in 737.8 days. The track has an eccentricity of 0.319. With an inclination of 149.3 ° the orbit is retrograde; that is, the moon moves around the planet against the direction of rotation of Jupiter.
Due to its orbital properties, Cyllene is assigned to the Pasiphae group , named after the Jupiter moon Pasiphae .
Physical data
Cyllene has a diameter of about 2 km. Their density is estimated at 2.6 g / cm³. It is probably made up mainly of silicate rock. It is very likely to have a very dark surface with an albedo of 0.04; that is, only 4% of the incident sunlight is reflected.
Web links
- MPEC 2003-G09: S / 2003 J 13 April 2, 2003 (discovery)
- IAUC 8116: Satellites of Jupiter and Saturn April 11, 2003 (discovery)
- MPEC 2004-H08: S / 2003 J 13 April 16, 2004 (rediscovery)
- IAUC 8502: Satellites of Jupiter March 30, 2005 (numbering and naming)
- Cyllene - By the Numbers | Planets - NASA Solar System Exploration
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