Английская Википедия:2577 Litva
Шаблон:Use dmy dates Шаблон:Infobox planet
2577 Litva, provisional designation Шаблон:Mp, is a Hungarian-type Mars-crosser and rare trinaryШаблон:Efn asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter.
It was discovered on 12 March 1975, by Soviet–Ukrainian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula.[1] It was named for the former Lithuanian Soviet Socialist Republic, which is now the nation of Lithuania.[2]
Orbit and classification
Litva is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.6–2.2 AU once every 2 years and 8 months (960 days). Its orbit has an eccentricity of 0.14 and an inclination of 23° with respect to the ecliptic.[3]
Physical characteristics
In the Tholen taxonomy, Litva is classified as an EU-type, a subtype of the bright E-type asteroids.[3] It has also been characterized as a Sl-type and Q-type asteroid by astronomers using the New Technology Telescope at La Silla and by PanSTARRSШаблон:' photometric survey, respectively.[4][5]
Rotation period
The body has a rotation period between 2.81288 and 2.82 hours,[6][7][8][9][10] superseding the original measurement that gave 5.618 hours.[11] Most recent photometric observation from 2014, gave a refined period of Шаблон:Val hours, using a statistical Bayesian inference methodology.[12]
Trinary system
In March 2009 the Central Bureau for Astronomical Telegrams announced the discovery of a moon orbiting the asteroid.Шаблон:Efn The satellite measures about 1.4 kilometer in diameter and orbits Litva at distance of 21 kilometers, with an orbital period of 1 day, 11 hours, and 53 minutes. In 2012, a second satellite orbiting at a distance of 378 kilometers, with a diameter of 1.2 kilometers, was discovered, with a rotation period of 214 days. The discovery was announced in late 2013. This made 2577 Litva the 11th asteroid discovered to be in a trinary system.[13]Шаблон:Efn
Naming
This minor planet was named after the Russian name for the Baltic state Lithuania, former member of the Soviet Union and now an independent Republic.[2] The official naming citation was published by the Minor Planet Center on 1 December 1982 (Шаблон:Small).[14]
Notes
References
External links
- Lightcurve plot of 2577 Litva, Palmer Divide Observatory, B. D. Warner (2010)
- Central Bureau for Astronomical Telegrams – CBET No. 1715
- 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
Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control
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- Английская Википедия
- Mars-crossing asteroids
- Hungaria asteroids
- Discoveries by Nikolai Chernykh
- Named minor planets
- Trinary minor planets
- EU-type asteroids (Tholen)
- Astronomical objects discovered in 1975
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