Английская Википедия:1190 Pelagia

Содержание

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

Текст

1190 Pelagia, provisional designation Шаблон:Mp, is a dark Nysian asteroid from the inner regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 20 September 1930, by Soviet–Georgian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after astronomer Pelageya Shajn.

Classification and orbit

Pelagia is a member of the Nysa family (Шаблон:Small), a prominent family of the inner main-belt, named after 44 Nysa.

It orbits the Sun at a distance of 2.1–2.8 AU once every 3 years and 9 months (1,385 days). Its orbit has an eccentricity of 0.13 and an inclination of 3° with respect to the ecliptic. The asteroid's observation arc begins at Heidelberg Observatory in January 1909, when it was identified as Шаблон:Mp, more than 21 years prior to its official discovery observation at Simeiz.

Physical characteristics

The asteroid has been characterized as an X-type asteroid by Pan-STARRS photometric survey.

Lightcurve

In December 2010, a rotational lightcurve of Pelagia was obtained from photometric observations by Japanese astronomer couple Hiromi and Hiroko Hamanowa. Lightcurve analysis gave a well-defined rotation period of 2.3661 hours with a brightness amplitude of 0.08 magnitude (Шаблон:Small).

While not being a fast rotator, the body has a notably short period for an asteroid of its size. Based on the lightcurve's low amplitude, it appears to have a rather spheroidal shape.

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Pelagia measures between 15.05 and 17.923 kilometers in diameter and its surface has an albedo between 0.031 and 0.067. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0486 and a diameter of 17.39 kilometers based on an absolute magnitude of 12.7.

Naming

This minor planet was named in honor of Soviet–Russian astronomer Pelageya Shajn (1894–1956). In 1928, she discovered the asteroid 1112 Polonia and became the first female discoverer of minor planets (Шаблон:Small). A second asteroid, 1648 Shajna, was also named in her and her husbands memory (Grigory Shajn).

External links

• Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• Шаблон:AstDys
• Шаблон:JPL small body