(4130) Ramanujan
|
Asteroid (4130) Ramanujan |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0570 AU |
| eccentricity | 0.0376 |
| Perihelion - aphelion | 2.9422 AU - 3.1718 AU |
| Inclination of the orbit plane | 9.7936 ° |
| Length of the ascending node | 175.2118 ° |
| Argument of the periapsis | 43.8110 ° |
| Sidereal period | 5.34 a |
| Mean orbital velocity | 17.04 km / s |
| Physical Properties | |
| Medium diameter | approx. 13 km |
| Absolute brightness | 12.3 mag |
| history | |
| Explorer | Rajgopalan Rajamohan |
| Date of discovery | 17th February 1988 |
| Another name | 1988 DQ 1 , 1978 GU 1 , 1979 OF, 1983 HU 1 , 1985 PU 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. | |
(4130) Ramanujan is a main belt asteroid discovered on February 17, 1988 by the Indian astronomer Rajgopalan Rajamohan at the Vainu Bappu Observatory ( observatory code 220) of the Indian Institute of Astrophysics in the Indian state of Tamil Nadu .
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.
(4130) Ramanujan was named after the Indian mathematician S. Ramanujan (1887–1920).
See also
Web links
- Asteroid Ramanujan: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (4130) Ramanujan in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (4130) Ramanujan in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
Individual evidence
- ↑ The family affiliation of (4130) Ramanujan in the database AstDyS-2 (English)
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family ( PDF , English)
- ^ Lutz D. Schmadel: Dictionary of minor planet names . Vol. 1. Springer, Berlin & New York 2003