(9617) Graham Chapman
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Asteroid (9617) Grahamchapman |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2245 AU |
| eccentricity | 0.1130 |
| Perihelion - aphelion | 1.9731 AU - 2.4759 AU |
| Inclination of the orbit plane | 6.1374 ° |
| Length of the ascending node | 165.5808 ° |
| Argument of the periapsis | 281.2997 ° |
| Sidereal period | 3.32 a |
| Mean orbital velocity | 19.96 km / s |
| Physical Properties | |
| Rotation period | 2.2856 h |
| Absolute brightness | 14.6 mag |
| history | |
| Explorer | UESAC |
| Date of discovery | March 17, 1993 |
| Another name | 1993 FA 5 , 1991 RN 18 |
| 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. | |
(9617) Grahamchapman (provisional name: 1993 FA 5 ) is a main belt asteroid between Mars and Jupiter . It was discovered on March 17, 1993 by the European Southern Observatory during the Uppsala-ESO Survey of Asteroids and Comets (UESAC).
Grahamchapman was named on March 20, 2000 after the actor Graham Chapman ; it is the first of a total of six asteroids that bear the names of the members of the comedian troupe Monty Python , the others are (9618) Johncleese , (9619) Terrygilliam , (9620) Ericidle , (9621) Michaelpalin and (9622) Terryjones .
In early 2006, observations at the Ondřejov NEO photometric program found that Grahamchapman was orbited by a moon . The moon is about a quarter the size of Grahamchapman and the period is about 19 hours. The study also shows that Grahamchapman has a rotation period of 2.3 hours and is roughly spherical .
See also
Web links
- Asteroid Grahamchapman: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- Asteroid Grahamchapman in the Small-Body Database of NASA's Jet Propulsion Laboratory at the California Institute of Technology, Pasadena, USA
- (9617) Grahamchapman in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- Uppsala-ESO search for asteroids and comets
- Ondrejov Asteroid Photometry Project
- European Southern Observatory