217 Eudora
Discovery | |
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Discovered by | J. Coggia |
Discovery date | August 30, 1880 |
Designations | |
A914 RA | |
Main belt | |
Orbital characteristics | |
Epoch 30 January 2005 (JD 2453400.5) | |
Aphelion | 561.361 Gm (3.752 AU) |
Perihelion | 298.821 Gm (1.997 AU) |
430.091 Gm (2.875 AU) | |
Eccentricity | 0.305 |
1780.504 d (4.87 a) | |
Average orbital speed | 17.57 km/s |
220.993° | |
Inclination | 10.474° |
163.151° | |
154.303° | |
Physical characteristics | |
Dimensions | 68.62 ± 1.41[1] km |
Mass | (1.52 ± 0.06) × 1018 kg[1] |
Mean density | 8.98 ± 0.65[1] g/cm3 |
25.253 ± 0.003[2] hr | |
Albedo | 0.048 |
Spectral type | C |
9.8 | |
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217 Eudora is a large Main belt asteroid. It was discovered by French (Corsican) astronomer J. Coggia on August 30, 1880 in Marseilles, France. It was his fourth asteroid discovery and is named after Eudora, a Hyad in Greek mythology.
It probably has a composition similar to carbonaceous chondrites. In 2007, a study showed it rotates every 25.253 ± 0.003 hours, based on lightcurve data.[2] A light curve generated from photometric observations at Pulkovo Observatory, give a matching rotation period of 25.253 ± 0.002 hours and a brightness variation of 0.22 ± 0.04 in magnitude.[3]
See also
References
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- 1 2 Buchheim, Robert K. (March 2007), "Lightcurves for 122 Gerda, 217 Eudora, 631 Phillipina, 670 Ottegebe, and 972 Cohnia", The Minor Planet Bulletin 34 (1), pp. 113–14, Bibcode:2007MPBu...34...13B.
- ↑ Pilcher, Frederick (October 2011), "Rotation Period Determinations for 11 Parthenope, 38 Leda, 111 Ate 194 Prokne, 217 Eudora, and 224 Oceana", The Minor Planet Bulletin 38 (4), pp. 183–185, Bibcode:2011MPBu...38..183P.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 217 Eudora at the JPL Small-Body Database
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