217 Eudora

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217 Eudora
Discovery
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)
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[1] kg
Mean density
8.98 ± 0.65[1] g/cm3
25.253 ± 0.003[2] hr
Albedo 0.048
Spectral type
C
9.8

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[edit]

References[edit]

  1. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  2. ^ a b Buchheim, Robert K. (March 2007), "Lightcurves for 122 Gerda, 217 Eudora, 631 Phillipina, 670 Ottegebe, and 972 Cohnia", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34 (1): 113–14, Bibcode:2007MPBu...34...13B. 
  3. ^ Pilcher, Frederick (October 2011), "Rotation Period Determinations for 11 Parthenope, 38 Leda, 111 Ate 194 Prokne, 217 Eudora, and 224 Oceana", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 38 (4): 183–185, Bibcode:2011MPBu...38..183P. 

External links[edit]