(235281) Jackwilliamson
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Asteroid (235281) Jackwilliamson |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Euphrosyne family |
| Major semi-axis | 3.1504 AU |
| eccentricity | 0.2265 |
| Perihelion - aphelion | 2.4367 AU - 3.8641 AU |
| Inclination of the orbit plane | 26.1028 ° |
| Length of the ascending node | 27.8489 ° |
| Argument of the periapsis | 105.5637 ° |
| Time of passage of the perihelion | October 20, 2021 |
| Sidereal period | 5.59 a |
| Mean orbital velocity | 16.56 km / s |
| Physical Properties | |
| Medium diameter | 5.409 (± 0.040) km |
| Albedo | 0.073 (± 0.013) |
| Absolute brightness | 15.0 mag |
| history | |
| Explorer | Bernard Christophe |
| Date of discovery | October 18, 2003 |
| Another name | 2003 UV 17 |
| 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. | |
(235281) Jackwilliamson is an asteroid of the main outer belt discovered on October 18, 2003 by the French astronomer Bernard Christophe at the Saint-Sulpice Observatory ( IAU code 947) in Saint-Sulpice , Canton of Noailles .
The asteroid belongs to the Euphrosyne family, a group of asteroids named after (31) Euphrosyne . The orbit of (235281) Jackwilliamson around the Sun is strongly inclined at more than 26 ° to the ecliptic of the solar system , which is typical for members of the Euphrosyne family.
The mean diameter of (235281) Jackwilliamson was calculated to be 5.409 (± 0.040) km and the albedo to be 0.073 (± 0.013).
(235281) Jackwilliamson was named by Bernard Christophe after the American science fiction writer Jack Williamson . The name was given general validity by publication of the International Astronomical Union (IAU) on February 18, 2011. Another asteroid named after Jack Williamson is the asteroid of the middle main belt (5516) Jawilliamson, discovered in 1989 and named in 1994 .
Web links
- (235281) Jackwilliamson in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (235281) Jackwilliamson in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances of (235281) Jackwilliamson according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Image by Bernard Christophe during the WETO 2012 conference (French)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)