(4951) Iwamoto
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Asteroid (4951) Iwamoto |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.2565 AU |
| eccentricity | 0.1664 |
| Perihelion - aphelion | 1.8809 AU - 2.6320 AU |
| Inclination of the orbit plane | 7.5277 ° |
| Sidereal period | 3.39 a |
| Mean orbital velocity | 19.82 km / s |
| Physical Properties | |
| Medium diameter | ~ 4 km |
| Albedo | 0.20 |
| Rotation period | ~ 118.0 h |
| Absolute brightness | 13.4 mag |
| Spectral class | S. |
| history | |
| Explorer |
Yoshikane Mizuno Toshimasa Furuta |
| Date of discovery | January 21, 1990 |
| Another name | 1990 BM, 1931 UQ, 1985 QN 6 , 1985 RH 5 , 1989 WS 3 |
| 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. | |
(4951) Iwamoto is an asteroid of the main belt , which on 21 January 1990 by the Japanese astronomer Yoshikane Mizuno and Toshimasa Furuta at the observatory in Kani ( IAU code 403) in Gifu Prefecture was discovered.
In May 2007 the observing astronomers discovered that (4951) Iwamoto has a moon. This satellite, named S / 2007 (4951) 1, has a diameter of around 3.5 km and orbits Iwamoto in 118 hours.
The asteroid was named after the Japanese astronomer Masayuki Iwamoto .
See also
Web links
- Asteroid Iwamoto: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- Asteroid Iwamoto in the Small-Body Database of NASA's Jet Propulsion Laboratory at the California Institute of Technology, Pasadena, USA
- (4951) Iwamoto in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- Johnston's Archives: (4951) Iwamoto