(2867) Šteins
|
Asteroid (2867) Šteins |
|
|---|---|
.png)
|
|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.3633 AU |
| eccentricity | 0.1459 |
| Perihelion - aphelion | 2.0185 AU - 2.7081 AU |
| Inclination of the orbit plane | 9.9354 ° |
| Length of the ascending node | 55.3662 ° |
| Argument of the periapsis | 251.0761 ° |
| Sidereal period | 3.63 a |
| Mean orbital velocity | 19.37 km / s |
| Physical Properties | |
| Medium diameter | 6.67 × 5.81 × 4.47 km |
| Albedo | 0.300 ± 0.034 |
| Rotation period | 6.049 h |
| Absolute brightness | 12.7 mag |
| Spectral class | E. |
| history | |
| Explorer | Nikolai Stepanowitsch Tschernych |
| Date of discovery | 4th November 1969 |
| Another name | 1969 VC , 1954 GL, 1979 FJ 4 , 1980 VV 1 , 1980 WB |
| 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. | |
(2867) Šteins is an asteroid in the main asteroid belt . It was discovered in 1969 by the Soviet astronomer Nikolai Stepanowitsch Tschernych and named by him after the Latvian - Soviet astronomer Kārlis Šteins (1911–1983). Its shape is clearly elongated: its longest axis exceeds the shortest by about 50 percent. Šstein's diameter is between 4.5 and 6.7 kilometers and the rotation takes six hours and three minutes.
On September 5, 2008, the Rosetta space probe flew past the Šteins at a distance of 800 kilometers and examined the object. This was the first spacecraft flyby of a Type E asteroid .
Due to the shape and the high porosity of 40%, it was concluded that (2867) Šteins are not a single, coherent block of rock, but rather a collection of large individual debris.
See also
Web links
- Asteroid Steins: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (2867) Šteins in the Small-Body Database of the Jet Propulsion Laboratory .
- Video: Rosetta meets asteroid Šteins . 2008, made available by the Technical Information Library (TIB), doi : 10.5446 / 12858 .
Individual evidence
- ↑ HU Keller et al .: E-Type Asteroid (2867) Steins as Imaged by OSIRIS on Board Rosetta. In: sciencemag.org . Vol. 327, January 8, 2010, pp. 190-193.
- ↑ Rosetta Stein's flyby confirmed. September 5, 2008, accessed September 5, 2008 .
- ↑ Diamond in space. Press release from the Max Planck Society. January 8, 2010, accessed February 10, 2015.
- ↑ Steins. Rubble dump in diamond shape. With a picture of the asteroid ( large view ). At: astronews.com. January 11, 2010, accessed October 1, 2016.