Erriapus
| Discovery[1] | |
|---|---|
| Discovered by | John J. Kavelaars et al. |
| Designations | |
| Saturn XXVIII S/2000 S 10 |
|
| Orbital characteristics[2] | |
| Epoch 2000 Feb. 26.00 | |
| 17 343 000 km | |
| Eccentricity | 0.4724 |
| 871.2 d (2.38 yr) |
|
| Inclination | 34.692 |
| Physical characteristics | |
| Dimensions | 10 km[3] |
| Albedo | 0.04 (assumed)[3] |
|
Spectral type
|
light red B−V=0.83, R−V=0.49[4] |
Erriapus (/ˌɛriˈæpəs/ 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.[5][6] It was named Erriapo in August 2003[7] after Erriapus, a giant in Gaulish mythology; the name was changed from dative Erriapo to nominative Erriapus per IAU conventions in late 2007.[8][9]
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[4][10] or to be a fragment of Albiorix.[11]
References
- ↑ Discovery Circumstances (JPL)
- ↑ Mean orbital parameters from JPL
- ↑ 3.0 3.1 Scott Sheppard pages
- ↑ 4.0 4.1 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
- ↑ 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
