(3220) Murayama
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Asteroid (3220) Murayama |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.2265 AU |
| eccentricity | 0.1733 |
| Perihelion - aphelion | 1.8407 AU - 2.6124 AU |
| Inclination of the orbit plane | 6.616 ° |
| Sidereal period | 3,322 a |
| Mean orbital velocity | 19.96 km / s |
| Physical Properties | |
| Medium diameter | approx. 5.4 km |
| Albedo | ? |
| Rotation period | 4,860 h |
| Absolute brightness | 13.0 likes |
| Spectral class | ? |
| history | |
| Explorer | M. Laugier |
| Date of discovery | November 22, 1951 |
| Another name | 1951 WF, 1941 WH, 1974 TW |
| 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. | |
(3220) Murayama is an asteroid of the main belt , which on 22 November 1951 by the French astronomer Marguerite Laugier at Nice was discovered. It is named after the Mars observer, meteorite expert and director of the National Museum of Natural Sciences Sadao Murayama.
Measurements of light curves of the asteroid led to the suspicion that this could be a double asteroid system. According to this, the asteroid would be orbited by a companion in around 13.14 hours. The ratio of the diameters of both bodies is estimated to be 0.4.
See also
swell
- ^ Lutz D. Schmadel : Dictionary of minor planet names . 5th revised edition. tape 1 . Springer, Berlin 2003, ISBN 3-540-00238-3 , pp. 268 (English).
- ↑ List of double systems among the asteroids (English / French) ( Memento from April 12, 2008 in the Internet Archive )
- ↑ Tsuchikawa et al., 2005, Probable binary 3220 Murayama , Minor Planet Bul., Vol. 32 , p. 88-89