(90712) Wittelsbach
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Asteroid (90712) Wittelsbach |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Asteroid family | Dora family |
| Major semi-axis | 2.7600 AU |
| eccentricity | 0.2400 |
| Perihelion - aphelion | 2.0977 AU - 3.4223 AU |
| Inclination of the orbit plane | 8.7859 ° |
| Length of the ascending node | 81.7882 ° |
| Argument of the periapsis | 291.6932 ° |
| Time of passage of the perihelion | April 16, 2018 |
| Sidereal period | 4.59 a |
| Mean orbital velocity | 17.67 km / s |
| Physical Properties | |
| Medium diameter | 5.391 (± 0.191) km |
| Albedo | 0.055 (± 0.009) |
| Absolute brightness | 15.2 mag |
| history | |
| Explorer | Freimut Börngen , Lutz D. Schmadel |
| Date of discovery | October 12, 1990 |
| Another name | 1990 TE 13 , 1999 RP 231 |
| 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. | |
(90712) Wittelsbach is an asteroid of the middle main belt that was discovered by the German astronomers Freimut Börngen and Lutz D. Schmadel on October 12, 1990 at the Tautenburg Observatory ( IAU code 033) in the Thuringian Tautenburg Forest .
The asteroid belongs to the Dora family, a group of asteroids named after (668) Dora . The timeless (non- osculating ) orbital elements of (90712) Wittelsbach are almost identical to those of the larger ones, if one assumes the absolute brightness of 14.5 compared to 15.1, asteroids (44421) 1998 SL 156 .
The rotation period of (90712) Wittelsbach was established in 2009 and 2018 by Brian D. Warner and in 2015 by Adam Waszczak, Chan-Kao Chang, Eran Ofek et al. examined. However, the light curves were not sufficient for a determination. The mean diameter of the asteroid was calculated to be 5.391 (± 0.191) km . The albedo of 0.055 (± 0.009) indicates a dark surface.
The railway from (90712) Wittelsbach was secured in 2004 so that numbering could be assigned. The asteroid was on 23 May 2005 at the suggestion of sincerity Börngen after the Wittelsbach Castle named, the ancestral home of the noble family of the Wittelsbach family .
Web links
- (90712) Wittelsbach in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (90712) Wittelsbach in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
- Discovery Circumstances by (90712) Wittelsbach according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ The family membership of (90712) Wittelsbach in the AstDyS-2 database (English)
- ↑ Small planets discovered on Tautenburger Platten on the website of Freimut Börngen