(15) Eunomia

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(15) EunomiaAstronomical symbol of Eunomia
Properties of the orbit ( animation )
Epoch:  January 13, 2016 ( JD 2,457,400.5)
Orbit type Main belt asteroid
Asteroid family Eunomia family
Major semi-axis 2.6435  AU
eccentricity 0.1873
Perihelion - aphelion 2.1485 AU - 3.1385 AU
Inclination of the orbit plane 11.7381 °
Length of the ascending node 293.1821 °
Argument of the periapsis 97.5420 °
Time of passage of the perihelion 3rd December 2015
Sidereal period 4.30 a
Mean orbital velocity 18 km / s
Physical Properties
Medium diameter 231.689 ± 2.234 km
Dimensions approx. 10 19Template: Infobox asteroid / maintenance / mass kg
Albedo 0.248 ± 0.042
Rotation period 6.083 h
Absolute brightness 5.2 likes
Spectral class
(according to Tholen)
Spectral class
(according to SMASSII)
Explorer Annibale de Gasparis
Date of discovery July 29, 1851
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(15) Eunomia is a main belt asteroid discovered by Annibale de Gasparis on July 29, 1851 in the constellation of Sagittarius .

Eunomia was after Eunomia , one of the Horen daughters of that Zeus and Themis from the Greek mythology named.

With a mean diameter of around 230 kilometers, Eunomia is one of the largest asteroids in the main belt. The asteroid has a geometric albedo of 0.25. It rotates around its own axis in about 6.083 hours.

See also