(9589) Deridder
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Asteroid (9589) Deridder |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Astraea family |
| Major semi-axis | 2.5950 AU |
| eccentricity | 0.0556 |
| Perihelion - aphelion | 2.4507 AU - 2.7394 AU |
| Inclination of the orbit plane | 4.1557 ° |
| Length of the ascending node | 133.4228 ° |
| Argument of the periapsis | 345.4330 ° |
| Sidereal period | 4.18 a |
| Mean orbital velocity | 18.49 km / s |
| Physical Properties | |
| Absolute brightness | 14.3 mag |
| history | |
| Explorer | Eric Walter Elst |
| Date of discovery | November 21, 1990 |
| Another name | 1990 WU 5 , 2197 T-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. | |
(9589) Deridder is an asteroid of the main belt , which on 21 November 1990 by the Belgian astronomer Eric Walter Elst at the La Silla Observatory ( IAU code 809) of the European Southern Observatory in Chile was discovered.
The asteroid was named on May 1, 2003 after the Belgian professor of law at the University of Ghent Remi De Ridder (1843–1930), who was appointed to the school commission by the government in 1881 and denounced the monopoly of the clergy in the school system.
See also
Web links
- Asteroid Deridder: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- Asteroid Deridder in the Small-Body Database of NASA's Jet Propulsion Laboratory at the California Institute of Technology, Pasadena, USA
- (9589) Deridder in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).