|Discovered by||John J. Kavelaars et al.|
|Discovery date||in 2000|
S/2000 S 10
|Epoch 2000 Feb. 26.00|
|17 343 000 km|
|871.2 d |
Erriapus (// ERR-ee-AP-əs; Latin: Erriapus, Erriappus), also Saturn XXVIII (28), is a prograde irregular satellite of Saturn. It was discovered by Brett Gladman, John J. Kavelaars and colleagues 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.
As a member of the Gallic group of irregular satellites, which share similar orbital characteristics and a light-red colour, Erriapus is hypothesized to have its origin in the break-up of a common progenitor of the group, or to be a fragment of its largest member, Albiorix.
- Discovery Circumstances (JPL)
- Mean orbital parameters from JPL
- Denk, T.; Mottola, S. (2019). Cassini Observations of Saturn's Irregular Moons (PDF). 50th Lunar and Planetary Science Conference. Lunar and Planetary Institute.
- Scott Sheppard pages
- Grav, T.; Holman, M. J.; Gladman, B. J.; Aksnes, K.; Photometric survey of the irregular satellites, Icarus, 166 (2003), pp. 33–45
- IAUC 7539: S/2000 S 10 December 7, 2000 (discovery)
- MPEC 2000-Y14: S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10 December 19, 2000 (discovery and ephemeris)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (naming the moon)
- "USGS: Spelling of Saturn XXVIII". Archived from the original on 2014-02-02. Retrieved 2019-08-10.
- IAUC 9191: SATURN XXVIII (ERRIAPUS) January 11, 2011
- Gladman, B. J.; Nicholson, P. D.; Burns, J. A.; Kavelaars, J. J.; Marsden, B. G.; Holman, M. J.; Grav, T.; Hergenrother, C. W.; Petit, J.-M.; Jacobson, R. A.; and Gray, W. J.; Discovery of 12 satellites of Saturn exhibiting orbital clustering, Nature, 412 (July 12, 2001), pp. 163–166
- Grav, T.; and Bauer, J.; A deeper look at the colors of Saturnian irregular satellites
- Ephemeris from IAU-MPC NSES