(4771) Hayashi
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Asteroid (4771) Hayashi |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.6836 AU |
| eccentricity | 0.1569 |
| Perihelion - aphelion | 2.2626 AU - 3.1046 AU |
| Inclination of the orbit plane | 4.7984 ° |
| Length of the ascending node | 288.9909 ° |
| Argument of the periapsis | 44.1598 ° |
| Sidereal period | 4.40 a |
| Mean orbital velocity | 18.17 km / s |
| Physical Properties | |
| Medium diameter | 12.510 ± 0.087 km |
| Albedo | 0.113 ± 0.011 |
| Rotation period | 9.801 h |
| Absolute brightness | 12.7 mag |
| history | |
| Explorer | M. Yanai , K. Watanabe |
| Date of discovery | September 7, 1989 |
| Another name | 1989 RM 2 , 1967 RD 1 , 1979 FQ, 1980 RA 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. | |
(4771) Hayashi is an asteroid of the main belt , which on 7 September 1989 by the Japanese astronomer Masayuki Yanai and Kazuro Watanabe at the observatory of Kitami ( IAU code was discovered 400).
It was named in honor of Kousuke Hayashi , who worked at the Sapporo City Astronomical Observatory in Sapporo for 20 years and has been chairman of the Japan Planetarium Research Association since 1990. One of his greatest achievements was the invention of a mobile observatory .
See also
Web links
- Asteroid Hayashi: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (4771) Hayashi in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (4771) Hayashi in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).