771 Libera

Description

The metallic X-type asteroid orbits the Sun at a distance of 2.0–3.3 AU once every 4 years and 4 months (1,576 days). Its orbit shows an eccentricity of 0.25 and is tilted by 15 degrees to the plane of the ecliptic. A photometric observation of the asteroid's light-curve performed at the Palmer Divide Observatory during 1999 rendered a rotation period of hours with a brightness variation of 0.57 magnitude. The result concurs with several previous observations, including a photometric analysis conducted over a twelve-year interval.

According to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid's surface has an albedo of 0.13 and 0.14, respectively, while the Collaborative Asteroid Lightcurve Link publishes a slightly lower figure of 0.12 from an alternative result of the Supplemental IRAS Minor Planet Survey.

The minor planet was named by Mrs. Hedwig Rheden in honor of a friend of the discoverer.

References

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References

1. Noah Webster (1884) ''A Practical Dictionary of the English Language''