(4865) Sor
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Asteroid (4865) Sor |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0481 AU |
| eccentricity | 0.0578 |
| Perihelion - aphelion | 2.8720 AU - 3.2242 AU |
| Inclination of the orbit plane | 10.0991 ° |
| Length of the ascending node | 43.2843 ° |
| Argument of the periapsis | 68.4517 ° |
| Time of passage of the perihelion | 4th June 2016 |
| Sidereal period | 5.32 a |
| Mean orbital velocity | 17.06 km / s |
| Physical Properties | |
| Absolute brightness | 12.4 mag |
| history | |
| Explorer | Tsutomu Seki |
| Date of discovery | October 18, 1988 |
| Another name | 1988 UJ , 1977 TZ 5 , 1990 BB 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. | |
(4865) Sor is an asteroid of the main outer belt discovered on October 18, 1988 by Japanese amateur astronomer Tsutomu Seki at the Geisei Observatory ( IAU code 372) in Kōchi Prefecture . The asteroid had already been sighted on October 8, 1977 under the provisional designation 1977 TZ 5 at the Crimean Observatory in Nautschnyj .
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. The timeless (non- osculating ) orbital elements of (4865) Sor are almost identical to those of the two smaller ones, assuming the absolute brightness of 15.5 and 16.4 compared to 12.4, asteroids (169205) 2001 RS 82 and 2010 VK 158 .
(4865) Sor was named after the Spanish guitarist Fernando Sor (1778-1839) on November 21, 1991 .
See also
Web links
- (4865) Sor in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (4865) Sor in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances of (4865) Sor according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Observations by (4865) Sor on minorplanetcenter.net (English)
- ↑ The family membership of (4865) Sor in the AstDyS-2 database (English)
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family . (PDF, English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)