(255) Oppavia
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Asteroid (255) Oppavia |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt |
| family | |
| Major semi-axis | 2.749 AU |
| eccentricity | 0.078 |
| Perihelion - aphelion | 2.534 AU - 2.964 AU |
| Inclination of the orbit plane | 9.5 ° |
| Length of the ascending node | 13.7 ° |
| Argument of the periapsis | 153.6 ° |
| Time of passage of the perihelion | March 31, 2013 |
| Sidereal period | 4 a 204 d |
| Mean orbital velocity | 17.9 km / s |
| Physical Properties | |
| Medium diameter | 57 km |
| Albedo | 0.0374 |
| Rotation period | 14 h 18 min |
| Absolute brightness | 10.39 mag |
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Spectral class (according to Tholen) |
X |
| history | |
| Explorer | Johann Palisa |
| Date of discovery | March 31, 1886 |
| 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. | |
(255) Oppavia is an asteroid of the main asteroid belt , which on March 31, 1886 by Johann Palisa the Observatory of Wien was discovered.
Oppavia moves from 2.5266 ( perihelion ) to 2.9663 ( aphelion ) astronomical units around the Sun in 4.5466 years . The orbit is inclined 9.4863 ° to the ecliptic , the orbital eccentricity is 0.0808.
Oppavia has a diameter of 57 kilometers. It has a dark surface with an albedo of 0.037.
The asteroid was named after the city of Opava (formerly Troppau) in the Czech Republic. It is the birthplace of Johann Palisa and at that time it belonged to Austria-Hungary.