Английская Википедия:1094 Siberia

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1094 Siberia (prov. designation: Шаблон:Mp) 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 Шаблон:Convert in diameter. It was named after the vast region of Siberia in North Asia.

Orbit and classification

Siberia is a member of the Eunomia family (Шаблон:Small), a prominent family of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members.Шаблон:Rp 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 Шаблон:Mp 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.

Naming

This minor planet was named after the vast geographic region of Siberia in North Asia, approximately Шаблон:Convert in area. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).

Physical characteristics

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.Шаблон:Rp It is also an assumed X-type.

Slow rotation

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 (Шаблон:Small). While not being a slow rotator, Siberia has a longer than average rotation period, especially for its size.

Diameter and albedo

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 18.79 kilometers in diameter and its surface has an albedo between 0.089 and 0.127.

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1227 and a diameter of 18.16 kilometers based on an absolute magnitude of 11.6.

In fiction

Шаблон:Mp is mentioned briefly in John Varley's science fiction novel Rolling Thunder, where it is described as "an escape-proof prison" of the Republic of Mars.Шаблон:Citation needed

External links

• Lightcurve Database Query (LCDB), at www.minorplanet.info
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• Шаблон:AstDys
• Шаблон:JPL small body