(2330) Ontake
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Asteroid (2330) Ontake |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Major semi-axis | 3.1793 AU |
| eccentricity | 0.0358 |
| Perihelion - aphelion | 3.0656 AU - 3.2930 AU |
| Inclination of the orbit plane | 8.6572 ° |
| Length of the ascending node | 140.4069 ° |
| Argument of the periapsis | 130.3031 ° |
| Time of passage of the perihelion | August 28, 2018 |
| Sidereal period | 5.67 a |
| Mean orbital velocity | 16.69 km / s |
| Physical Properties | |
| Medium diameter | 33.061 km (± 0.197) |
| Albedo | 0.040 (± 0.008) |
| Absolute brightness | 11.6 mag |
| history | |
| Explorer | Hiroki Kōsai , Kiichirō Furukawa |
| Date of discovery | 18th February 1977 |
| Another name | 1977 DS 3 , 1972 FG, 1978 JF, 1979 ON 15 |
| 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. | |
(2330) Ontake is an asteroid located in the outer main belt , which was discovered on February 18, 1977 by the Japanese astronomers Hiroki Kōsai and Kiichirō Furukawa at the Kiso Observatory ( IAU code 381) of the University of Tokyo . The asteroid had already been sighted on March 16 and 21, 1972 under the provisional designation 1972 FG at the Crimean Observatory in Nautschnyj .
The mean diameter of the asteroid was calculated to be 33.061 km (± 0.197). The albedo of 0.040 (± 0.008) indicates a dark surface.
(2330) Ontake was at 1 March 1981 after the stratovolcano Ontake named, which is located near the Kiso Observatory. The dedication emphasizes the first ontake eruption in known history in October 1979. Other asteroids named with reference to the Kiso observatory are (2271) Kiso , (2470) Agematsu , (2924) Mitake-mura and (2960) Ohtaki .
Web links
- (2330) Ontake in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2330) Ontake 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 (2330) Ontake 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 from (2330) Ontake on minorplanetcenter.net (English)