Narvi (moon)
Narvi | |
---|---|
Provisional or systematic name | S / 2003 S 1 |
Central body | Saturn |
Properties of the orbit | |
Major semi-axis | 19,007,000 km |
Periapsis | 10,815,000 km |
Apoapsis | 27,199,000 km |
eccentricity | 0.431 |
Orbit inclination | 145.8 ° |
Orbital time | 1003.9 d |
Mean orbital velocity | 1.38 km / s |
Physical Properties | |
Albedo | 0.06 |
Apparent brightness | 23.8 mag |
Medium diameter | ≈ 7 km |
Dimensions | ≈ 3.4 × 10 14 kg |
Sidereal rotation | ≈ 10 h 13 min |
Acceleration of gravity on the surface | ≈ 0.002 m / s 2 |
Escape speed | ≈ 3.6 m / s |
discovery | |
Explorer | |
Date of discovery | April 8, 2003 |
Narvi (also Saturn XXXI) is one of the smaller outer moons of the planet Saturn .
discovery
The discovery of Narvi by Scott S. Sheppard , David C. Jewitt and Jan Kleyna on recordings from February 5 to April 3, 2003, was announced on April 8, 2003. Narvi was initially given the provisional name S / 2003 S 1. In January 2005, the moon was named after the giant Narfi from Nordic mythology .
Orbit data
Narvi orbits Saturn on an eccentric orbit at a mean distance of 18,719,000 km in 956 days and 6 hours. The orbit has an eccentricity of 0.3522 ° and is strongly inclined at 134.592 ° against the ecliptic , which represents the Laplace plane at this distance from Saturn .
Structure and physical data
Narvi has a diameter of 6.6 km. With an albedo of 0.06, its surface is very dark. Only 6% of the incident sunlight is reflected.
Web links
- MPEC 2003-G39: S / 2003 S 1 April 8, 2003 (Discovery and Ephemeris)
- IAUC 8116: Satellites of Jupiter and Saturn April 11, 2003 (discovery)
- MPEC 2004-D41: S / 2003 S 1 February 26, 2004 (rediscovery)
- IAUC 8471: Satellites of Saturn January 21, 2005 (numbering and naming)
Individual evidence
- ↑ 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 / 2006 S 1 |
Semi- major axis (km) Narvi 19.007.000 |
Bergelmir |