Erriapus (pronounced /ˌɛriˈæpəs/, ERR-ee-AP-əs, or as Latin Erriapus, Erriappus), also Saturn XXVIII, is a prograde irregular satellite of Saturn. It was discovered by Brett Gladman, John J. Kavelaars, et al. in 2000, and given the temporary designation S/2000 S 10. It was named Erriapo in August 2003 after Erriapus, a giant in Gaulish mythology; the name was changed from dative Erriapo to nominative Erriapus per IAU conventions in late 2007.
Erriapus is about 10 kilometres in diameter, and orbits Saturn at an average distance of 17,3 Gm in 871 days.
Member of the Gallic group of irregular satellites, sharing a similar orbit and displaying a similar light-red colour, Erriapus is thought to have its origin in a break-up of a common progenitor of the group or to be a fragment of Albiorix.
1. ^ Discovery Circumstances (JPL)
* Ephemeris from IAU-MPC NSES
* David Jewitt pages
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