(2217) Eltigen
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Asteroid (2217) Eltigen |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.1537 AU |
| eccentricity | 0.1668 |
| Perihelion - aphelion | 2.6276 AU - 3.6799 AU |
| Inclination of the orbit plane | 2.2482 ° |
| Length of the ascending node | 127.4995 ° |
| Argument of the periapsis | 173.5990 ° |
| Sidereal period | 5.60 a |
| Mean orbital velocity | 16.74 km / s |
| Physical Properties | |
| Medium diameter | 26.10 (± 1.9) km |
| Albedo | 0.1242 (± 0.020) |
| Rotation period | 6.924 (± 0.003) h |
| Absolute brightness | 11.3 mag |
| history | |
| Explorer | Tamara Smirnova |
| Date of discovery | September 26, 1971 |
| Another name | 1971 SK 2 , 1942 LG, 1958 FJ, 1959 NP, 1970 LD, 1974 CL, 1976 NN, 1976 OB 1 , 1977 TH 5 |
| 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. | |
(2217) Eltigen is an asteroid of the main outer belt that was discovered by the Soviet astronomer Tamara Smirnova on September 26, 1971 at the Crimean Observatory in Nautschnyj ( IAU code 095). Unconfirmed sightings of the asteroid had already taken place: on June 10, 1942 (1942 LG) at the Union Observatory in Johannesburg , on March 24, 1958 (1958 FJ) at the Heidelberg-Königstuhl State Observatory , on July 10, 1959 (1959 NP ) at the Goethe Link Observatory in Indiana and 1970 (1970 LD) at the Crimean Observatory in Nautschnyj.
The asteroid has a mean diameter of 26.10 km (± 1.9). Its albedo of 0.1242 (± 0.020) is comparable to that of the Earth's moon (0.12). The rotation period for observations on April 30 and May 3 to 5, 2009 at the 50 cm Ritchey-Chrétien telescope of the Oakley Southern Sky Observatory (IAU code E09) in Coonabarabran , New South Wales was 6.924 (± 0.003 ) Hours can be determined.
(2217) Eltigen belongs to the Themis family, a group of asteroids named after (24) Themis . The timeless (non- osculating ) orbital elements of (2217) Eltigen are almost identical to those of the smaller one, assuming the absolute brightness of 14.4 compared to 11.3, asteroids (60062) 1999 TE 119 .
(2217) Eltigen was named on March 1, 1981 after the small town of Eltigen , a landing point of the Kerch-Eltigen operation , during which the Red Army prepared to recapture the Crimean peninsula in November 1943 .
Web links
- (2217) Eltigen in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2217) Eltigen in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (2217) Eltigen according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (2217) Eltigen at the IAU Minor Planet Center (English)
- ↑ Richard Ditteon, Elaine Kirkpatrick, Katelyn Doering: The Minor Planet Bulletin, Volume 37, Number 1, January to March 2010, bibcode : 2010MPBu ... 37 .... 1D (English)
- ↑ Database with the assignment of 12,487 asteroids to asteroid groups (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)