76 Freia

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76 Freia
76Freia (Lightcurve Inversion).png
A three-dimensional model of 76 Freia based on its light curve.
Discovery
Discovered by Heinrich d'Arrest
Discovery date October 21, 1862
Designations
Named after
Freyja
 
Minor planet category Outer main belt[1] (Cybele)
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 594.715 Gm (3.975 AU)
Perihelion 427.898 Gm (2.860 AU)
511.306 Gm (3.418 AU)
Eccentricity 0.163
2307.979 d (6.32 a)
16.00 km/s
299.268°
Inclination 2.116°
204.535°
254.070°
Physical characteristics
Dimensions 183.7±4 km[1]
Mass (1.97 ± 4.20) × 1018[2] kg
Mean density
0.79 ± 1.69[2] g/cm3
0.0513 m/s²
0.0971 km/s
Albedo 0.036 [3]
Temperature ~151 K
Spectral type
CP
7.90

76 Freia (/ˈfr.ə/ FRY) is a very large main-belt asteroid. It orbits in the outer part of the asteroid belt and is classified as a Cybele asteroid. Its composition is very primitive and it is extremely dark in color. Freia was discovered by the astronomer Heinrich d'Arrest on October 21, 1862, in Copenhagen, Denmark. It was his first and only asteroid discovery. It is named after the goddess Freyja in Norse mythology.

References[edit]

  1. ^ a b "JPL Small-Body Database Browser: 76 Freia". 2008-03-04 last obs. Retrieved 2010-09-05. 
  2. ^ a b 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.
  3. ^ Asteroid Data Sets