Albiorix (moon)
Albiorix | |
---|---|
Provisional or systematic name | S / 2000 S 11 |
Central body | Saturn |
Properties of the orbit | |
Major semi-axis | 16,182,000 km |
Periapsis | 8,447,000 km |
Apoapsis | 23,917,000 km |
eccentricity | 0.478 |
Orbit inclination | 33.98 ° |
Orbital time | 783.5 d |
Mean orbital velocity | 1.50 km / s |
Physical Properties | |
Albedo | 0.06 |
Apparent brightness | 20.5 mag |
Medium diameter | ≈ 32 km |
Dimensions | ≈ 2.1 × 10 16 kg |
Medium density | 2.3 g / cm 3 |
Sidereal rotation | ≈ 13 h 20 min |
Acceleration of gravity on the surface | 0.0055 m / s 2 |
Escape speed | 13 m / s |
discovery | |
Explorer |
Brett Gladman et al. |
Date of discovery | December 19, 2000 |
Albiorix (also Saturn XXVI) is one of the smaller outer moons of the planet Saturn .
discovery
The discovery of Albiorix by a team of Brett Gladman , John J. Kavelaars , Jean-Marc Petit, Hans Scholl , Matthew J. Holman , Brian G. Marsden , Philip D. Nicholson and Joseph A. Burns on November 9th through December 17, 2000 was announced on December 19, 2000. Albiorix was initially given the provisional designation S / 2000 S 11. The moon was named after Albiorix , a deity from Celtic mythology , who is also known under the name Teutates (Toutatis).
Orbit data
Albiorix orbits Saturn on an eccentric orbit at an average distance of 16,394,000 km in around 783 days and 11 hours. The orbital eccentricity is 0.4791, with the orbit at 33.979 ° strongly inclined towards the ecliptic . Albiorix belongs to the Gallic group of Saturn's moons.
Structure and physical data
Albiorix has a diameter of 26 km. Its density of 2.3 g / m 3 is relatively high compared to the other Saturnian moons. It is probably composed of water ice with a high proportion of silicate rock. It has a very dark surface with an albedo of 0.06, i.e. That is, only 6% of the incident sunlight is reflected . With an apparent brightness of 20.5 m , it is an extremely faint object. The period of rotation was measured by the Cassini-Huygens spacecraft and is approximately 13 hours and 20 minutes.
Web links
- MPEC 2000-Y13: S / 2000 S 11 December 19, 2000 (Discovery and Ephemeris)
- IAUC 7545: S / 2000 S 11 December 19, 2000 (discovery)
- MPEC 2001-T07: S / 2000 S 5, S / 2000 S 9, S / 2000 S 11 October 6, 2001 (rediscovery)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
Individual evidence
- ↑ a b T. Denk, S. Mottola (2019): Studies of irregular satellites: I. Lightcurves and rotation periods of 25 Saturnian moons from Cassini observations. Icarus 322 , 80-102. DOI: 10.1016 / j.icarus.2018.12.040 .
further inside | Saturn moons | further outside |
S / 2004 S 37 |
Semi- major axis (km) Albiorix 16,182,000 |
S / 2007 S 2 |