Narvi (moon)

Narvi /ˈnɑːrvi/ or Saturn XXXI is a natural satellite of Saturn. It was discovered by a team of astronomers led by Scott S. Sheppard in 2003, and given the temporary designation S/2003 S 1.

Narvi
Narvi's discovery image
Discovery
Discovered byScott S. Sheppard et al.
Discovery date11 April 2003
Designations
Pronunciation/ˈnɑːrvi/
S/2003 S 1
Orbital characteristics [1]
19226600 km
Eccentricity0.2990
−995.33 days
Inclination136.803°
Satellite ofSaturn
GroupNorse group
Physical characteristics
Mean diameter
7+50%
−30% km[2]
10.21±0.02 h[2]
23.8

    Description

    Narvi is about 7 kilometres in diameter, and orbits Saturn at an average distance of 19,371,000 km in 1006.541 days, at an inclination of 136.8° to the ecliptic (109° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.2990, very similar to Bestla's orbit.[3] Narvi's rotation period is 10.21±0.02 hours, and its light curve has three minima like Siarnaq and Ymir. Unlike the other triangular moons, however, one minimum is much higher than the others, and the maximum that is a half-period ahead is much lower.[2]

    Naming

    It was named in January 2005 after Narfi, a giant in Norse mythology. The name was approved by the IAU Working Group on Planetary System Nomenclature on 21 January 2005.

    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.
    3. Denk, T.; Mottola, S.; Bottke, W. F.; Hamilton, D. P. (2018). "The Irregular Satellites of Saturn". Enceladus and the Icy Moons of Saturn (PDF). Vol. 322. University of Arizona Press. pp. 409–434. Bibcode:2018eims.book..409D. doi:10.2458/azu_uapress_9780816537075-ch020. ISBN 9780816537488.


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