(2902) Westerlund
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Asteroid (2902) Westerlund |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2.2028 ± 0.0001 AU |
| eccentricity | 0.1988 ± 0.0004 |
| Perihelion - aphelion | 1.765 ± 0.0008 AU - 2.6406 ± 0.0001 AU |
| Inclination of the orbit plane | 4.3775 ± 0.0419 ° |
| Length of the ascending node | 178.4192 ± 0.3947 ° |
| Argument of the periapsis | 158.9121 ± 0.404 ° |
| Time of passage of the perihelion | November 2, 2020 |
| Sidereal period | 3.27 a ± 0.0509 d |
| Physical Properties | |
| Medium diameter | 4.120 ± 0.099 km |
| Albedo | 0.247 ± 0.041 |
| Rotation period | ≈30 h |
| Absolute brightness | 14.0 mag |
| Spectral class | SMASSII: Sq |
| history | |
| Explorer |
 Claes-Ingvar Lagerkvist
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| Date of discovery | March 16, 1980 |
| Another name | 1980 FN 3 ; 1968 UF 2 ; 1981 SB |
| 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. | |
(2902) Westerlund ( 1980 FN 3 ; 1968 UF 2 ; 1981 SB ) is an approximately four kilometers large asteroid of the inner main belt that was discovered on March 16, 1980 by the Swedish astronomer Claes-Ingvar Lagerkvist at the La Silla Observatory on La Silla was discovered in La Higuera in Chile ( IAU code 809).
The rotation period is given as 30 hours, but this value is based on fragmentary observations and could therefore be completely wrong.
designation
(2902) Westerlund was named after the Swedish astronomer Bengt Westerlund (1921-2008). The appointment was made on the occasion of his retirement as director of the Uppsala Astronomical Observatory (IAU code 549). Westerlund was known for his study of the structure of the Milky Way and for his work on the Magellanic Clouds and for many years supported the Uppsala program for minor planets and comets . He made observations of asteroids with the Schmidt telescope at the Uppsala Southern Station at the Siding Spring Observatory near Coonabarabran , New South Wales in Australia (IAU code 260).
See also
Web links
- (2902) Westerlund in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2902) Westerlund in the Small-Body Database of the Jet Propulsion Laboratory (English).
Individual evidence
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Fifth Revised and Enlarged Edition. Ed .: Lutz D. Schmadel. 5th edition. Springer Verlag , Berlin , Heidelberg 2003, ISBN 978-3-540-29925-7 , pp. 186 (English, 992 pp., Link.springer.com [ONLINE; accessed on September 22, 2019] Original title: Dictionary of Minor Planet Names . First edition: Springer Verlag, Berlin, Heidelberg 1992): “1980 FN 3 . Discovered 1980 Mar. 16 by C.-I. Lagerkvist at La Silla. "
| predecessor | asteroid | successor |
|---|---|---|
| (2901) Bagehot | numbering | (2903) Zhuhai |