Hati (moon)

Hati /ˈhɑːti/ 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
Hati imaged by the Cassini spacecraft in November 2015
Discovery
Discovery date2004
Designations
Designation
Saturn XLIII
S/2004 S 14
Orbital characteristics[1]
19856000 km
Eccentricity0.372
−1038.7 days
Inclination165.8°
Satellite ofSaturn
GroupNorse group
Physical characteristics
Mean diameter
5+50%
−30%
 km
[2]
5.45±0.04 h[2]
24.4

    Hati is about 6 kilometers in diameter, and orbits Saturn at an average distance of 20,303 Mm in 1080 days, at an inclination of 163° to the ecliptic (165° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.291. 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.[2]

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

    References

    1. S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
    2. Denk, T.; Mottola, S. (2019). Cassini Observations of Saturn's Irregular Moons (PDF). 50th Lunar and Planetary Science Conference. Lunar and Planetary Institute.
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