(17428) Charleroi
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Asteroid (17428) Charleroi |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Major semi-axis | 3.9397 AU |
| eccentricity | 0.1156 |
| Perihelion - aphelion | 3.4843 AU - 4.3950 AU |
| Inclination of the orbit plane | 8.4237 ° |
| Length of the ascending node | 255.9843 ° |
| Argument of the periapsis | 326.8999 ° |
| Time of passage of the perihelion | September 7, 2021 |
| Sidereal period | 7.82 a |
| Physical Properties | |
| Medium diameter | 30.297 (± 0.297) km |
| Albedo | 0.064 (± 0.012) |
| Rotation period | 6.034 (± 0.007) h |
| Absolute brightness | 11.3 mag |
| history | |
| Explorer | Henri Debehogne |
| Date of discovery | February 28, 1989 |
| Another name | 1989 DL , 1985 SO 2 , 1988 AQ, 2000 PT 4 |
| 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. | |
(17428) Charleroi is an asteroid of the main outer belt discovered on March 21, 1991 by the Belgian astronomer Henri Debehogne at the La Silla Observatory of the European Southern Observatory in Chile ( IAU code 809). The asteroid had already been sighted on September 19, 1985 under the provisional designation 1985 SO 2 at the Crimean Observatory in Nautschnyj and on January 11, 1988 (1988 AQ) at the Karl Schwarzschild Observatory in the Tautenburg Forest .
The asteroid is in a 3: 2 orbital resonance with the planet Jupiter , which means that if the sun orbits Jupiter two times, the asteroid orbits the sun three times. Mean solar distance ( major semi-axis ), eccentricity and inclination of the orbit plane of (17428) Charleroi correspond to the Hilda group . This asteroid family is named after the asteroid (153) Hilda .
The mean diameter of the asteroid was calculated to be about 30 km , the albedo of 0.06 indicates a dark surface. Brian D. Warner and Robert D. Stephens determined the rotation period to be 6.034 (± 0.007) hours during observations on October 14-16 , 2016 at the Center for Solar System Studies in Rancho Cucamonga , California . The light curve here indicates a retrograde rotation.
(17428) Charleroi was named after the Walloon city of Charleroi on November 13, 2008 .
Web links
- (17428) Charleroi in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (17428) Charleroi in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (17428) Charleroi according to the Minor Planet Center of the IAU at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (17428) Charleroi at the IAU Minor Planet Center (English)
- ↑ The orbit resonance of (17428) Charleroi in the AstDyS-2 database (English)
- ^ Brian D. Warner, Robert D. Stephens, Daniel R. Coley: LIGHTCURVE ANALYSIS OF HILDA ASTEROIDS AT THE CENTER FOR SOLAR SYSTEM STUDIES: 2017 OCTOBER-DECEMBER . The Minor Planet Bulletin, vol. 45, no. 2, pages 147 and 153, 2018 ( PDF , 2.3 MB; English)