File:Hati-cassini.png · Wikimedia Commons · See Wikimedia Commons
Key facts
- Discovered by
- Scott S. Sheppard , David C. Jewitt , Jan T. Kleyna , Brian G. Marsden
- Discovery date
- December 2004
- Designation
- Saturn XLIII
- Pronunciation
- / ˈ h ɑː t i / (with the PASTA vowel)
- Named after
- Hati Hróðvitnisson
- Alternative names
- S/2004 S 14
- Semi major axis
- 19 697 100 km
- Orbital period sidereal
- −1040.29 days
- Inclination
- 164.1°
- Satellite of
- Saturn
- Group
- Norse group
- Mean diameter
- 5 +50%, −30% km
- Mean density
- ≳0.5–0.7 g/cm
- Synodic rotation period
- 5.45 ± 0.04 h
- Albedo
- 0.06 (assumed)
via Wikipedia infobox
~2 min read
Encyclopedic overview
Hati or Saturn XLIII is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 4 May 2005, from observations taken between 12 December 2004 and 11 March 2005.
Hati is about 5 kilometers in diameter, and orbits Saturn at an average distance of 19,697 Mm in 1040 days, at an inclination of 164° to the ecliptic, in a retrograde direction and with an eccentricity of 0.375, somewhat similar to Mundilfari's orbit. In March 2013, the synodic rotational period was measured by Cassini to about 5.45±0.04 hours. This is the fastest known rotation of all of Saturn's moons, and in fact the fastest known among all moons (including asteroid moons) for which a rotation period has been reliably measured. Like Mundilfari, it is very elongated in shape.
Excerpted from Wikipedia’s “Hati” article, available under the CC BY-SA 4.0 licence.