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Concept
1094 Siberia
Summary
1094 Siberia (prov. designation: ) is an Eunomian asteroid from the central regions of the asteroid belt. It was discovered on 12 February 1926, by Soviet astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The X-type asteroid (Xk) has a rotation period of 21.2 hours and measures approximately in diameter. It was named after the vast region of Siberia in North Asia.
Siberia is a member of the Eunomia family (), a prominent family of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members. It orbits the Sun in the central main-belt at a distance of 2.2–2.9 AU once every 4 years and 1 month (1,483 days). Its orbit has an eccentricity of 0.13 and an inclination of 14° with respect to the ecliptic.
The asteroid was first identified as at Heidelberg or Simeiz in March 1918. The body's observation arc begins at Heidelberg in June 1935, more than 9 years after its official discovery observation at Simeiz.
This minor planet was named after the vast geographic region of Siberia in North Asia, approximately in area. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ().
In the SMASS classification, Siberia is a Xk-subtype, that transitions from the X-type to the K-type asteroids, while the overall spectral type of the Eunomia family is that of a stony S-type asteroid. It is also an assumed X-type.
In December 2006, a first rotational lightcurve of Siberia was obtained from photometric observations by astronomers from New Zealand and Australia. Lightcurve analysis gave a rotation period of 21.15 hours with a brightness amplitude of 0.45 magnitude, indicating a non-spherical shape (). While not being a slow rotator, Siberia has a longer than average rotation period, especially for its size.
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Siberia measures between 17.08 and 18.
Official source
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