(3309) Brorfelde
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Asteroid (3309) Brorfelde |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 1.8174 AU |
| eccentricity | 0.0536 |
| Perihelion - aphelion | 1.7200 AU - 1.9147 AU |
| Inclination of the orbit plane | 21.1387 ° |
| Sidereal period | 2.45 a |
| Mean orbital velocity | 22.09 km / s |
| Physical Properties | |
| Medium diameter | ~ 5 km |
| Rotation period | 2.5041 h |
| Absolute brightness | 13.6 mag |
| Spectral class | SMASSII: S. |
| history | |
| Explorer |
KS Jensen Karl Augustesen |
| Date of discovery | January 28, 1982 |
| Another name | 1982 bra |
| 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. | |
(3309) Brorfelde is an asteroid of the inner main belt , which was discovered on January 28, 1982 by the Danish astronomers K. S. Jensen and Karl Augustesen at the Brorfelde Observatory ( IAU code 054). Due to its orbit parameters, it belongs to the Hungaria group .
In 2005, observing fluctuations in brightness, the possibility appeared that (3309) Brorfelde might have a moon. In 2006, observations at the Palmer Divide Observatory confirmed that (3309) Brorfelde is a binary asteroid.
The asteroid was named after the place of its discovery on the occasion of the 40th anniversary of the observatory's founding.
See also
Web links
- Asteroid Brorfelde: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (3309) Brorfelde in the Small-Body Database of the Jet Propulsion Laboratory .
- (3309) Brorfelde in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- Lutz D. Schmadel : Dictionary of Minor Planet Names . 5th ed. Springer, Berlin 2003, ISBN 3-540-00238-3 (English) Preview on Google Books
Individual evidence
- ^ Warner, BD: Recent Asteroid Lightcurve Studies at the Palmer Divide Observatory . In: The Society for Astronomical Sciences 25th Annual Symposium on Telescope Science. Held May 23-25, 2006, at Big Bear, CA. Published by the Society for Astronomical Sciences. . May 2006, p. 117. bibcode : 2006SASS ... 25..117W .