Aegir (moon)
| Aegir | |
|---|---|
| Provisional or systematic name | S / 2004 S 10 |
| Central body | Saturn |
| Properties of the orbit | |
| Major semi-axis | 20,735,000 km |
| Periapsis | 15,510,000 km |
| Apoapsis | 25,960,000 km |
| eccentricity | 0.252 |
| Orbit inclination | 166.7 ° |
| Orbital time | 1116.5 d |
| Mean orbital velocity | 1.33 km / s |
| Physical Properties | |
| Albedo | 0.04 (?) |
| Apparent brightness | 24.4 mag |
| Medium diameter | ≈ 6 km |
| Dimensions | ≈ 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 |
David C. Jewitt , Scott S. Sheppard , |
| Date of discovery | December 12, 2004 |
Aegir (also Saturn XXXVI) is one of the smaller outer moons of the planet Saturn .
discovery
The discovery of Aegir by David C. Jewitt , Scott S. Sheppard , Jan Kleyna and Brian G. Marsden on recordings from December 12, 2004 to March 11, 2005, was announced on May 3, 2005.
Aegir was initially given the provisional designation S / 2004 S 10. In April 2007, the moon was named after the sea giant Aegir (also Ægir or Hlér), a son of the frost giant Fornjótr (also Fornjot) and brother of Logi and Kari , from Nordic mythology named.
Orbit data
Aegir orbits Saturn on a retrograde eccentric orbit in around 1116 days and 6 hours. The eccentricity of the orbit is 0.251, with the orbit being inclined at 167.43 ° to the ecliptic .
Structure and physical data
Aegir has a diameter of about 6 km.
Web links
- T. Denk's Aegir website (in English)
- MPEC 2005-J13: Twelve New Satellites of Saturn May 3, 2005 (Discovery and Ephemeris)
- IAUC 8523: New Satellites of Saturn May 4, 2005 (discovery)
- MPEC 2006-C55: S / 2004 S 10, S / 2004 S 11, S / 2004 S 15, S / 2004 S 18 February 10, 2006 (rediscovery)
- IAUC 8826: Satellites of Jupiter and Saturn April 5, 2007 (numbering and naming)
| further inside | Saturn moons | further outside |
| S / 2004 S 22 |
Semi- major axis (km) Aegir 20,735,000 |
S / 2004 S 30 |