(2476) Andersen
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Asteroid (2476) Andersen |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0241 AU |
| eccentricity | 0.1176 |
| Perihelion - aphelion | 2.6685 AU - 3.3796 AU |
| Inclination of the orbit plane | 10.8189 ° |
| Length of the ascending node | 82.3967 ° |
| Argument of the periapsis | 265.1270 ° |
| Sidereal period | 5.26 a |
| Mean orbital velocity | 17.14 km / s |
| Physical Properties | |
| Medium diameter | 20.695 (± 0.939) km |
| Albedo | 0.150 (± 0.024) |
| Absolute brightness | 11.2 mag |
| history | |
| Explorer | Nikolai Tschernych |
| Date of discovery | May 2, 1976 |
| Another name | 1976 JF 2 , 1935 QH 1 , 1939 HD, 1973 YC 3 |
| 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. | |
(2476) Andersen is an asteroid of the outer main belt with a mean diameter of 20.695 (± 0.939) kilometers, which was discovered by the Soviet astronomer Nikolai Tschernych on May 2, 1976 at the Crimean Observatory in Nautschnyj ( IAU code 095). There had already been unconfirmed sightings of the asteroid: on August 27, 1935 (1935 QH 1 ) at the Union Observatory in Johannesburg , on April 20, 1939 (1939 HD) at the Heidelberg-Königstuhl State Observatory and on December 25, 1973 (1973 YC 3 ) at the Crimean Observatory in Nautschnyj.
The mean diameter of the asteroid was calculated to be 20.695 (± 0.939) km and the albedo to be 0.150 (± 0.024).
The asteroid belongs to the Eos family , a group of asteroids which typically have large semiaxes from 2.95 to 3.1 AU , bounded inward by the Kirkwood gap of the 7: 3 resonance with Jupiter , and orbital inclinations between 8 ° and 12 °. The group is named after the asteroid (221) Eos . The family is believed to have emerged from a collision more than a billion years ago. The timeless (non- osculating ) orbital elements of (2476) Andersen are almost identical to those of the smaller, if one assumes the absolute brightness of 15.4 compared to 11.1, asteroids (324849) 2007 LN 6 .
(2476) Andersen was named on July 2, 1985 after the Danish poet and writer Hans Christian Andersen .
Web links
- (2476) Andersen in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (2476) Andersen in the Small-Body Database of the Jet Propulsion Laboratory .
Individual evidence
- ↑ (2476) Andersen at the IAU Minor Planet Center (English)
- ↑ David Vokrouhlický , Miroslav Brož , Alessandro Morbidelli , William Bottke , David Nesvorný , Daniel Lazzaro, Andy Rivkin: Yarkovsky footprints in the Eos family ( PDF , English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer-Verlag, Berlin 2012, 6th edition, ISBN 978-3-642-29717-5 . Page 191 (English)