(2222) Lermontov
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Asteroid (2222) Lermontov |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.1220 AU |
| eccentricity | 0.1656 |
| Perihelion - aphelion | 2.6050 AU - 3.6389 AU |
| Inclination of the orbit plane | 2.5737 ° |
| Length of the ascending node | 94.9099 ° |
| Argument of the periapsis | 337.0715 ° |
| Time of passage of the perihelion | 15th September 2016 |
| Sidereal period | 5.52 a |
| Mean orbital velocity | 16.88 km / s |
| Physical Properties | |
| Medium diameter | 29.644 (± 0.145) km |
| Albedo | 0.070 (± 0.009) |
| Rotation period | 4.344 (± 0.0008) h |
| Absolute brightness | 11.3 mag |
| history | |
| Explorer | Nikolai Tschernych |
| Date of discovery | 19th September 1977 |
| Another name | 1977 ST 1 , 1933 UO, 1940 AG, 1951 AD 1 , 1961 XN, 1966 UR, 1972 YH 1 , 1973 AS 2 , 1974 FA, 1974 HM 1 , 1976 OM |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(2222) Lermontov is an asteroid of the main outer belt , which was discovered by the Soviet astronomer Nikolai Tschernych on September 19, 1977 at the Crimean Observatory in Nauchnyj ( IAU code 095).
There had been some sightings of the asteroid before, for example in 1933 under the provisional designation 1933 UO at the Royal Observatory of Belgium in Uccle , on January 13, 1940 (1940 AG) at the Konkoly Observatory in Budapest , on January 5 1951 (1951 AD) at the McDonald Observatory in Texas , on December 6, 1961 (1961 XN) at the Goethe Link Observatory in Indiana , on December 30, 1972 (1972 YH 1 ) and February 2, 1973 (1973 AS 2 ) and July 27, 1976 (1976 OM) at the Crimean Observatory in Nautschnyj.
The mean diameter of (2222) Lermontov is almost 30 km, the albedo of 0.070 (± 0.009) suggests a dark surface.
The asteroid belongs to the Themis family, a group of asteroids named after (24) Themis .
The rotation period was determined by Maurice Clark during observations from December 23-25, 2005 at the Rosemary Hill Observatory in Florida . He came to a value of 4,344 h (± 0.0008).
(2222) Lermontov was named on March 1, 1981 after the Russian poet Michail Lermontow (1814–1841), who was one of the most important representatives of Romanticism in Russian literature , along with Alexander Pushkin and Fyodor Tjuttschew . The asteroid (2208) Pushkin was named after Pushkin , and the asteroid (9927) Tyutchev after Tjuttschew 1999 . An impact crater on the northern hemisphere of the planet Mercury was named after Lermontov as early as 1976 : Mercury crater Lermontov .
See also
Web links
- (2222) Lermontov in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2222) Lermontov in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (2222) Lermontov according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2222) Lermontov at the IAU Minor Planet Center (English)
- ↑ The family affiliation of (2222) Lermontov (English)
- ↑ LIGHTCURVE RESULTS FOR 1318 NERINA , 2222 LERMONTOV, 3015 CANDY , 3089 OUJIANQAN , 3155 LEE , 6410 FUJIWARA , 6500 KODAIRA , (8290) 1992 NP , 9566 RYKHLOVA , (42923) 1999 SR18 , AND 2001 FY . Minor Planet Bulletin 34-1, 2007, p. 19f (English; PDF , 2.4 MB)
- ↑ The Merkur crater Lermontov in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS (English)