Albiorix (moon)

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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

Individual evidence

  1. 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