(4498) Shinkoyama
|
Asteroid (4498) Shinkoyama |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0038 AU |
| eccentricity | 0.1201 |
| Perihelion - aphelion | 2.6431 AU - 3.3645 AU |
| Inclination of the orbit plane | 8.8973 ° |
| Length of the ascending node | 280.9840 ° |
| Argument of the periapsis | 72.3175 ° |
| Sidereal period | 5.21 a |
| Mean orbital velocity | 17.18 km / s |
| Physical Properties | |
| Medium diameter | approx. 16 km |
| Rotation period | 5.2068 h |
| Absolute brightness | 11.7 mag |
| history | |
| Explorer | Tsutomu Seki |
| Date of discovery | 5th January 1989 |
| Another name | 1989 AG 1 , 1966 UU, 1971 OO 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. | |
(4498) Shinkoyama is an asteroid of the main belt , which on January 5, 1989 by Japanese amateur astronomers Tsutomu Seki at Geisei Observatory ( IAU code 372) in the prefecture of Kōchi was discovered. The first sightings of the asteroid had already been made in October 1966 under the provisional designation 1966 UU at the Crimean Observatory in Nautschnyj .
The asteroid belongs to the Eos family, a group of asteroids which typically have large semiaxes from 2.95 to 3.1 AU, bounded inward by the Kirkwood gap of the 7: 3 resonance with Jupiter , and orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago.
(4498) Shinkoyama was after the Japanese solar physicist Shin Koyama named (* 1927), long a professor at the 30-year Kagawa University in Takamatsu in Kagawa Prefecture held and retired in March 1991st
See also
Web links
- Asteroid Shinkoyama: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (4498) Shinkoyama in the Small-Body Database of the Jet Propulsion Laboratory .
- (4498) Shinkoyama in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
Individual evidence
- ↑ (4498) Shinkoyama at the IAU Minor Planet Center (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family ( PDF , English)