(981) Martina
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Asteroid (981) Martina |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.0949 AU |
| eccentricity | 0.2039 |
| Perihelion - aphelion | 2.4638 AU - 3.7261 AU |
| Inclination of the orbit plane | 2.066 ° |
| Sidereal period | 5.445 a |
| Mean orbital velocity | 16.93 km / s |
| Physical Properties | |
| Medium diameter | 28.88 km |
| Albedo | 0.125 |
| Rotation period | ? H |
| Absolute brightness | 10,856 likes |
| Spectral class | ? |
| history | |
| Explorer | SI Beljawski |
| Date of discovery | 1917 |
| Another name | 1917 S92, 1959 GF, 1969 QA |
| 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. | |
(981) Martina is an asteroid of the main belt , which was discovered on September 23, 1917 by the Russian astronomer Sergei Ivanovich Beljawski at the Crimean Observatory in Simejis .
The asteroid was named after the French revolutionary Henri Martin .