1206 Numerowia
| Discovery [1] | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 18 October 1931 |
| Designations | |
| MPC designation | 1206 Numerowia |
|
Named after
|
Boris Numerov (astronomer)[2] |
| 1931 UH · 1974 QE 1974 TY1 |
|
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 83.39 yr (30,460 days) |
| Aphelion | 3.0233 AU |
| Perihelion | 2.7078 AU |
| 2.8655 AU | |
| Eccentricity | 0.0550 |
| 4.85 yr (1,772 days) | |
| 235.16° | |
| Inclination | 13.015° |
| 324.48° | |
| 277.95° | |
| Physical characteristics | |
| Dimensions | 15.63±1.09 km[4] 14.173±0.092 km[5] 27.90 km (calculated)[3] |
| 4.7743 h[6] | |
| 0.141±0.021[4] 0.1680±0.0205[5] 0.057 (assumed)[3] |
|
| C [3] | |
| 11.5 | |
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1206 Numerowia, provisional designation 1931 UH, is an assumed carbonaceous asteroid from the outer region of the asteroid belt, about 15 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany on 18 October 1931.[7]
The asteroid orbits the Sun at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,772 days). Its orbit shows an eccentricity of 0.06 and is tilted by 13 degrees to the plane of the ecliptic. It has a rotation period of 4.8 hours[6] and an albedo of 0.14–0.17, based on observations by the Japanese Akari and the Wide-field Infrared Survey Explorer (WISE) satellites.[4][5] The Collaborative Asteroid Lightcurve Link (CALL) assumes the body to be a carbonaceous C-type asteroid, rather than a silicaceous one, with a much lower geometric albedo of 0.06. As a consequence, the body's diameter would be twice as large, or about 28 kilometers, compared to the results by the space-based Akari and WISE missions.[3]
The minor planet was named after Russian astronomer and geophysicist Boris Numerov (1891–1941), founder and director of the Institute for Theoretical Astronomy in Leningrad, who was executed for espionage by the Soviet Union in 1941. The accusation was based on the fact that a German had named the asteroid after him.[2] In 1957, his memory was rehabilitated.[8] The lunar crater Numerov was also named in his honour.
References
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<references />, or <references group="..." />External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- 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
- 1206 Numerowia at the JPL Small-Body Database
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