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101 Helena
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101 Helena

 101 Helena
Orbital characteristics 1
Orbit type Main belt
Semimajor axis 2.583 AU
Perihelion distance 2.218 AU
Aphelion distance 2.947 AU
Orbital period 4.15 years
Inclination 10.20°
Eccentricity 0.141
Physical characteristics 1
Diameter 65.8 km
Rotation period 3 23.08 hours
Spectral class S
Abs. magnitude 8.33
Albedo 4 0.190
History 2
Discoverer J. C. Watson, 1868

101 Helena is a fairly large, rocky Main belt asteroid.

It was discovered by J. C. Watson on August 15, 1868.

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