(15282) Franzmarc
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Asteroid (15282) Franzmarc |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Major semi-axis | 2.9950 AU |
| eccentricity | 0.0776 |
| Perihelion - aphelion | 2.7627 AU - 3.2273 AU |
| Inclination of the orbit plane | 8.4781 ° |
| Length of the ascending node | 203.4700 ° |
| Argument of the periapsis | 146.0583 ° |
| Time of passage of the perihelion | May 27, 2017 |
| Sidereal period | 5.18 a |
| Mean orbital velocity | 17.21 km / s |
| Physical Properties | |
| Medium diameter | 6.800 (± 0.160) km |
| Albedo | 0.167 (± 0.024) |
| Absolute brightness | 13.5 likes |
| history | |
| Explorer | Freimut Börngen , Lutz D. Schmadel |
| Date of discovery | September 13, 1991 |
| Another name | 1991 RX 4 , 1981 UC 24 |
| 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. | |
(15282) Franzmarc is an asteroid of the outer main belt , which was discovered by the German astronomers Freimut Börngen and Lutz D. Schmadel on September 13, 1991 at the Tautenburg Observatory ( IAU code 033) in the Thuringian Tautenburg Forest . Unconfirmed sightings of the asteroid had already been made on October 24 and 25, 1981 under the provisional designation 1981 UC 24 at the Palomar Observatory in California .
According to calculations, the mean diameter of (15282) Franzmarc is just under 7 km.
The mean distance from the Sun ( major semiaxis ), eccentricity and inclination of the orbit plane of the asteroid roughly correspond to the Eos family , a group of asteroids which typically have large semiaxes of 2.95 to 3.1 AU , bounded inward by the Kirkwood gap of 7: 3-resonance with Jupiter , as well as 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. According to the SMASS classification ( Small Main-Belt Asteroid Spectroscopic Survey ), a spectroscopic study by Gianluca Masi , Sergio Foglia and Richard P. Binzel at (15282) Franzmarc assumed a dark surface, so it could, roughly speaking, be trade a C asteroid . If this is confirmed, the orbital coincidence with the Eos group would be rather coincidental, since Eos asteroids are brighter and belong to the spectroscopic class S and K respectively.
The railway from (15282) Franzmarc was secured in 2000 so that numbering could be assigned. The asteroid was named on October 13 of the same year at the suggestion of Freimut Börngen after the German painter , draftsman and graphic artist Franz Marc , who is considered one of the most important Expressionist painters in Germany.
Web links
- (15282) Franzmarc in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (15282) Franzmarc in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (15282) Franzmarc according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (15282) Franzmarc 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 . (English, PDF ; 26 MB)
- ^ Gianluca Masi, Sergio Foglia, Richard P. Binzel: Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog . (English)
- ↑ subdivision of asteroids to S-types, C-types and V-types (English)
- ↑ Small planets discovered on Tautenburger Platten on the website of Freimut Börngen