(7103) Wichmann

Asteroid (7103) Wichmann
Properties of the orbit ( animation ) Epoch: December 9, 2014 ( JD 2,457,000.5)
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 .

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