(7103) Wichmann
Asteroid (7103) Wichmann |
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Properties of the orbit ( animation ) | |
Orbit type | Main outer belt asteroid |
Asteroid family | Eos family |
Major semi-axis | 3.0191 AU |
eccentricity | 0.0768 |
Perihelion - aphelion | 2.7871 AU - 3.2511 AU |
Inclination of the orbit plane | 10.1488 ° |
Length of the ascending node | 183.4567 ° |
Argument of the periapsis | 93.9528 ° |
Sidereal period | 5.25 a |
Physical Properties | |
Absolute brightness | 12.7 mag |
history | |
Explorer | Karl Wilhelm Reinmuth |
Date of discovery | April 7, 1953 |
Another name | 1953 GH , 1953 GN 1 , 1991 PS 18 |
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. |
(7103) Wichmann is an asteroid of the outer main belt , which was discovered on April 7, 1953 by the German astronomer Karl Wilhelm Reinmuth at the State Observatory Heidelberg-Königstuhl ( IAU code 024). On the same day, the asteroid was also spotted at the Alma-Ata observatory .
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 (7103) Wichmann are almost identical to those of the two smaller ones, assuming the absolute brightness of 14.6 and 15.2 compared to 12.7, asteroids (116231) 2003 YO 5 and ( 196759) 2003 SM 156 .
(7103) Wichmann was named on August 6, 2009 at the suggestion of Lutz D. Schmadel after the German astronomer Moritz Ludwig Georg Wichmann (1821-1859). A moon crater in the south of the front of the moon was named after Wichmann as early as 1935 : the moon crater Wichmann .
Web links
- (7103) Wichmann in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (7103) Wichmann in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (7103) Wichmann according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (7103) Wichmann 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)
- ^ The lunar crater Wichmann in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS