(2140) Kemerovo
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Asteroid (2140) Kemerovo |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Major semi-axis | 2.9883 AU |
| eccentricity | 0.0578 |
| Perihelion - aphelion | 2.8157 AU - 3.1610 AU |
| Inclination of the orbit plane | 6.9873 ° |
| Length of the ascending node | 274.7814 ° |
| Argument of the periapsis | 120.9121 ° |
| Sidereal period | 5.17 a |
| Mean orbital velocity | 17.23 km / s |
| Physical Properties | |
| Medium diameter | 29.49 km (± 1.6) |
| Albedo | 0.0887 (± 0.011) |
| Rotation period | approx. 9 h |
| Absolute brightness | 11.3 mag |
| Spectral class | X |
| history | |
| Explorer | Lyudmila Chernych |
| Date of discovery | 3rd August 1970 |
| Another name | 1970 PE , 1926 AJ, 1940 WB, 1952 BH 1 , 1957 BB, 1973 FY, 1975 MP, 1975 NM 1 , 1975 QJ, 1975 RM 1 |
| 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. | |
(2140) Kemerovo is an asteroid of the outer main belt , which was discovered by the Soviet astronomer Lyudmila Tschernych on August 3, 1970 at the Crimean Observatory in Nautschnyj ( IAU code 095). There had been several unconfirmed sightings of the asteroid before: for example, on January 12, 1926 under the provisional designation 1926 AJ at the Hamburg observatory in Bergedorf , on November 26, 1940 (1940 WB) at the French Observatoire de Nice and on January 28 1952 (1952 BH 1 ) at the McDonald Observatory in Texas .
The mean diameter of the asteroid was determined to be 29.49 (± 1.6) km. With an albedo of 0.09 rounded up, the surface is quite dark. The light curve was measured at the Observatoire de Genève (Geneva Observatory ) - in August 2001 by Laurent Bernasconi and Olivier Thizy and then again in July 2006 by René Roy - and has a period of approximately 9 hours.
(2140) Kemerovo was named on February 8, 1982 after Kemerovo , a Russian city in western Siberia .
Web links
- (2140) Kemerovo in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2140) Kemerovo in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (2140) Kemerovo according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Master list of well classified asteroids (English)
- ↑ (2140) Kemerovo at the IAU Minor Planet Center (English)
- ^ Periods of rotation of asteroids and comets (French)