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Hati (moon)

Moon of Saturn

Summary

Moon of Saturn

Field	Value
name	Hati
image	Hati-cassini.png
caption	Hati imaged by the Cassini spacecraft in November 2015
mpc_name	Saturn XLIII
alt_names	S/2004 S 14
discovered	December 2004
discoverer	Scott S. Sheppard
David C. Jewitt
Jan T. Kleyna
Brian G. Marsden
named_after	Hati Hróðvitnisson
orbit_ref
semimajor
inclination	164.1°
eccentricity	0.375
period	−1040.29 days
satellite_of	Saturn
group	Norse group
physical_ref
mean_diameter
mass	≥ (calculated)
density	≥
rotation	h
albedo	0.06 (assumed)
magnitude	24.4
abs_magnitude	15.3

David C. Jewitt Jan T. Kleyna Brian G. Marsden

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 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.

It was named in April 2007 after Hati, a giant wolf from Norse mythology, son of Fenrisúlfr and twin brother of Sköll.

References

(2019). "Cassini Observations of Saturn's Irregular Moons". [[Lunar and Planetary Institute]].
(2013-10-01). "Irregular Saturnian Moon Lightcurves from Cassini-ISS Observations: Update". AAS/Division for Planetary Sciences Meeting Abstracts #45.
(October 2013). "Abstract Book Correlating to the Online Bulletin of the American Astronomical Society". [[American Astronomical Society]].
"Planetary Satellite Mean Elements".
(2018). "Enceladus and the Icy Moons of Saturn". [[The University of Arizona Press]].

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

norse-group moons-of-saturn irregular-satellites discoveries-by-scott-s.-sheppard astronomical-objects-discovered-in-2005 moons-with-a-retrograde-orbit

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