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85 Io
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85 Io

85 Io
Orbital characteristics 1
Orbit type Main belt (Eunomia)
Semimajor axis 2.653 AU
Perihelion distance 2.141 AU
Aphelion distance 3.165 AU
Orbital period 4.32 years
Inclination 11.97°
Eccentricity 0.193
Physical characteristics 1
Diameter 154.8 km
Rotation period 3 6.875 hours
Spectral class C
Abs. magnitude 7.61
Albedo 4 0.067
History 2
Discoverer C. H. F. Peters, 1865

85 Io is a large and dark-colored Main belt asteroid. It is probably a primitive body composed of carbonates.

Like 70 Panopaea it orbits within the Eunomia asteroid family but it is most likely not related to the shattered parent body.

It was discovered by C. H. F. Peters on September 19, 1865.

A diameter of 178 kilometers was measured from a occultation of a star on December 10, 1995.

Io is also the name of the volcanic satellite of Jupiter.