(4130) Ramanujan
Asteroid (4130) Ramanujan |
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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