| Discovery [1] | |
|---|---|
 | |
| Astronomers | B. Gladman , J. Cavelaars |
| opening date | September 23, 2000 |
| Orbital characteristics [2] | |
| Distance from Saturn (center of mass) | min 9,259,704 km Max. 25 948 296 km |
| Semimajor axis (orbit radius) | 17,604,000 km |
| Minor axis | 15 500 759 km |
| Eccentricity (elongation) | 0.474 |
| Orbital inclination | 34.469 ° (to the equator Saturn) |
| Circulation period | 871.25 days (2 years, 141 days, 9 h, 36 min, 0 s) |
| physical characteristics | |
| Average diameter | 10 km [3] |
| Weight | 7.6⋅10 14 kg |
| Average density | 2300 kg / m³ |
| Surface acceleration | 0,0028 m / s² |
| II space velocity | ≈ 4,5 m / s |
| Albedo [3] | 0.06 |
| Color | light red [4] |
Erripo ( lat. Erriapus , obsolete. Erriapo) (S / 2000 S10) - the 28th irregular satellite of Saturn , the rotation coincides in direction with the rotation of the planet. It was discovered by Brett Gladman , John Cavelaars and other astronomers in 2000, which gave the satellite the provisional name S / 2000 S 10 [5] [6] . It was named Erripo in August 2003 [7] after Erripe, the giant of Celtic mythology . The name was changed at the end of 2007 from the dative case to the present form in accordance with the current conversion rules for the Latin language [8] .
Erripo is about 10 kilometers in diameter and revolves around Saturn on average at a distance of 17,342,000 km in 871 days.
Erripo belongs to the Gallic group of irregular satellites rotating in a normal orbit, and having a light red color. It is believed that Erripo originated from a torn celestial body from which this entire group of satellites descended [4] [9] , or it is a detached fragment of the Albiorix satellite [10] .
Notes
- ↑ Discovery Circumstances (JPL)
- ↑ Mean orbital parameters from JPL
- ↑ 1 2 Scott Sheppard pages
- ↑ 1 2 Tommy Grav; Matthew J. Holman; Brett J. Gladman; Kaare Aksnes; Photometric survey of the irregular satellites , Icarus, 166 (2003), pp. 33-45
- ↑ IAUC 7539: S / 2000 S 10 2000 December 7 (discovery)
- ↑ MPEC 2000-Y14: S / 2000 S 3, S / 2000 S 4, S / 2000 S 5, S / 2000 S 6, S / 2000 S 10 2000 December 19 (discovery and ephemeris)
- ↑ IAUC 8177: Satellites of Jupiter, Saturn, Uranus 2003 August 8 (naming the moon)
- ↑ USGS: Spelling of Saturn XXVIII
- ↑ Gladman, BJ; Philip D. Nicholson; Joseph A. Burns; Kavelaars, JJ; Brian G. Marsden; Holman, MJ; Grav, T .; K. Hergenrother ; Jean-Marc Petit; Robert A. Jacobson; and William J. Gray; Discovery of 12 satellites of Saturn exhibiting orbital clustering , Nature, 412 (2001 July 12), pp. 163-166
- ↑ Grav, T .; and James Bauer; A deeper look at the colors of Saturnian irregular satellites
Links
- Irregular satellites
- Ephemeris from IAU-MPC NSES