15 Eunomia
.png) A three-dimensional model of 15 Eunomia based on its licht curve. | |
| Discovery | |
|---|---|
| Discovered bi | Annibale de Gasparis |
| Discovery date | Julie 29, 1851 |
| Designations | |
| Pronunciation | /jʊˈnoʊmiə/ ew-NOH-mee-ə |
Named after | Eunomia |
| none | |
| Main belt, (Eunomia family) | |
| Orbital chairactereestics[1] | |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 3.138 |
| Perihelion | 2.149 |
| 2.643 | |
| Eccentricity | 0.187 |
| 4.30 a (1569.687 d) | |
Average orbital speed | 18.16 km/s |
| 286.102° | |
| Inclination | 11.738° |
| 293.273° | |
| 97.909° | |
| Pheesical chairacteristics | |
| Dimensions | (357×255×212)±15 km[2] 268 km (mean) 330×245×205[3][4][5] 255.3 ± 15 km (IRAS)[1] |
| Mass | 3.12 ×1019 kg[2] |
Mean density | 3.09 ± 0.52 g/cm³[2] 3.8±0.7 g/cm³[6] (based on IRAS diameter of 255km) |
| 0.08 m/s² | |
| 0.16 km/s | |
| 0.2535 d (6.083 h)[1][7] | |
| Albedo | 0.209 (geometric)[1] |
| Temperatur | ~166 K max: 260 K (-13 °C) |
Spectral teep | S-type asteroid[1] |
| 7.9[8] to 11.24 | |
| 5.28[1] | |
| 0.29" tae 0.085" | |
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15 Eunomia is a very lairge asteroid in the inner asteroid belt.
References
[eedit | eedit soorce]- ↑ a b c d e f "JPL Small-Body Database Browser: 15 Eunomia". 8 Mey 2008. Retrieved 4 December 2008.
- ↑ a b c Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived frae the original on 21 October 2013. Retrieved 4 December 2008.
- ↑ Baer, James; Steven R. Chesley (2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris" (PDF). Celestial Mechanics and Dynamical Astronomy. Springer Science+Business Media B.V. 2007. 100 (2008): 27–42. Bibcode:2008CeMDA.100...27B. doi:10.1007/s10569-007-9103-8. Archived frae the original (PDF) on 24 Februar 2011. Retrieved 11 November 2008.
- ↑ Nathues, A.; et al.; (2005); Spectral study of the Eunomia asteroid family - I. Eunomia Archived 2015-11-05 at the Wayback Machine, Icarus, Vol. 175, p. 452
- ↑ Tanga, P.; et al.; (2003); Asteroid observations with the Hubble Space Telescope; Astronomy & Astrophysics, Vol. 401, p. 733
- ↑ Vitagliano, Aldo; Reiner M. Stoss (2006). "New mass determination of (15) Eunomia based on a very close encounter with (50278) 2000CZ12". Astronomy and Astrophysics. 455 (3): L29–L31. Bibcode:2006A&A...455L..29V. doi:10.1051/0004-6361:20065760.
- ↑ "Planetary Data System (PDS) lightcurve data". Archived frae the original on 14 Juin 2006. Retrieved 7 November 2014.
- ↑ Donald H. Menzel and Jay M. Pasachoff (1983). A Field Guide to the Stars and Planets (2nd ed.). Boston, MA: Houghton Mifflin. pp. 391. ISBN 0-395-34835-8.
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