(4931) Tomsk
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Asteroid (4931) Tomsk |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Major semi-axis | 2.5788 AU |
| eccentricity | 0.2819 |
| Perihelion - aphelion | 1.8518 AU - 3.3059 AU |
| Inclination of the orbit plane | 23.1717 ° |
| Length of the ascending node | 154.9632 ° |
| Argument of the periapsis | 281.5091 ° |
| Time of passage of the perihelion | 5th September 2019 |
| Sidereal period | 4.14 a |
| Mean orbital velocity | 18.55 km / s |
| Physical Properties | |
| Medium diameter | 7.618 (± 0.151) km |
| Albedo | 0.328 (± 0.047) |
| Absolute brightness | 12.5 mag |
| history | |
| Explorer | Henri Debehogne , Giovanni de Sanctis |
| Date of discovery | February 11, 1983 |
| Another name | 1983 CN 3 , 1987 DL |
| 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. | |
(4931) Tomsk is an asteroid of the central main belt discovered on February 11, 1980 by the Belgian astronomer Henri Debehogne and the Italian astronomer Giovanni de Sanctis at the La Silla Observatory of the European Southern Observatory in Chile ( IAU code 809).
The asteroid's orbit around the Sun has a high eccentricity of 0.2810 . The solar orbit is strongly inclined at more than 23 ° compared to the ecliptic of the solar system . The mean diameter of the asteroid was calculated to be 7.618 (± 0.151) kilometers and the albedo to be 0.328 (± 0.047).
The light curve of (4931) Tomsk was examined on three days in March 2016. However, when observing the Shed of Science Observatory in Minneapolis and the Perth Observatory in Western Australia , the rotation period could not be determined.
The asteroid was named after the Siberian city of Tomsk on February 6, 1993 at the suggestion of Henri Debehogne . Debehogne had worked with scientists from Tomsk State University in the field of celestial mechanics .
Web links
- (4931) Tomsk in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (4931) Tomsk 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 (4931) Tomsk according to the Minor Planet Center of the IAU at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Russel I. Durkee, Jessie L. Houghton, Carmen L. Eggleston: The Rotation Period of Asteroids 4931 Tomsk and 5232 Jordaens . The Minor Planet Bulletin, vol. 43, no. 4, 2016, page 284f, bibcode : 2016MPBu ... 43..284D (English)
- ↑ Tunguska page at the University of Bologna (English)