Kiviuq (moon)
Kiviuq | |
---|---|
Provisional or systematic name | S / 2000 S 5 |
Central body | Saturn |
Properties of the orbit | |
Major semi-axis | 11,110,000 km |
Periapsis | 7,399,000 km |
Apoapsis | 14,821,000 km |
eccentricity | 0.334 |
Orbit inclination | 46.16 ° |
Orbital time | 449.2 d |
Mean orbital velocity | 1.8 km / s |
Physical Properties | |
Albedo | 0.06 |
Apparent brightness | 22.0 likes |
Medium diameter | ≈ 16 km |
Dimensions | ≈ 3.3 × 10 16 kg |
Medium density | 2.3 g / cm 3 |
Sidereal rotation | ≈ 21 h 58 min |
Acceleration of gravity on the surface | ≈ 0.0344 m / s 2 |
Escape speed | ≈ 23.5 m / s |
discovery | |
Explorer |
Brett Gladman et al. |
Date of discovery | August 7, 2000 |
Kiviuq (also Saturn XXIV) is one of the smaller outer moons of the planet Saturn .
discovery
The discovery of Kiviuq 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 August 7th through November 4, 2000 was announced on November 18, 2000. Kiviuq was initially given the provisional designation S / 2000 S 5. The moon was named after Kiviuq , a hero of epic stories in the Inuit world in the arctic regions of Canada , Alaska and Greenland .
Orbit data
Kiviuq orbits Saturn on an eccentric orbit at an average distance of 11,365,000 km in around 449 days and 17 hours. The orbital eccentricity is 0.3336, with the orbit at 46.148 ° strongly inclined towards the ecliptic . Kiviuq belongs to the Inuit group of Saturn's moons.
Structure and physical data
Kiviuq has a diameter of 14 km. Its density of 2.5 g / cm 3 is relatively high compared to the other moons of Saturn. 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 . Seen from earth, it is an extremely faint object with an apparent brightness of 22.0 m . The rotation period was measured by the Cassini-Huygens spacecraft and is unusually long at almost 22 hours.
Web links
- IAUC 7521: S / 2000 S 5, S / 2000 S 6 November 18, 2000 (discovery)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
- MPEC 2000-Y14: S / 2000 S 3, S / 2000 S 4, S / 2000 S 5, S / 2000 S 6, S / 2000 S 10 December 19, 2000 (ephemeris)
- MPEC 2001-T07: S / 2000 S 5, S / 2000 S 9, S / 2000 S 11 October 6, 2001 (rediscovery)
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 .
- ↑ DLR Institute for Planetary Research: Cassini-Huygens ( Memento of the original from May 2, 2007 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Datasheet of Saturn's moons
further inside | Saturn moons | further outside |
Iapetus |
Semi- major axis (km) Kiviuq 11,111,000 |
Ijiraq |