185 Eunike

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185 Eunike
Discovered by C. H. F. Peters, 1878
Minor planet category Main belt
Orbital characteristics
Aphelion 3.088 AU
Perihelion 2.389 AU
2.738 AU
Eccentricity 0.128
4.53 years
Inclination 23.25°
Physical characteristics
Dimensions 160.61 ± 5.00[1] km
Mass (3.56 ± 2.61) × 1018[1] kg
Mean density
1.64 ± 1.21[1] g/cm3
10.83 hours
Albedo 0.064
Spectral type

185 Eunike is a dark and very large main-belt asteroid, with an approximate diameter of 157 kilometres. It has a primitive carbonaceous composition.

It was discovered by C. H. F. Peters on March 1, 1878, in Clinton, New York and named after Eunike, a Nereid in Greek mythology whose name means 'happy victory'. The name was chosen to celebrate the Treaty of San Stefano (1878).

There have been three observed occultations of stars by Eunike.


  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.

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