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

    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.

    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. 1 2 3 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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