(631) Philippina
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Asteroid (631) Philippina |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.79 AU |
| eccentricity | 0.085 |
| Perihelion - aphelion | 2.553 AU - 3.027 AU |
| Inclination of the orbit plane | 18.9 ° |
| Length of the ascending node | 224.8 ° |
| Argument of the periapsis | 278.3 ° |
| Time of passage of the perihelion | February 5, 2009 |
| Sidereal period | 4 a 241 d |
| Mean orbital velocity | 17.8 km / s |
| Physical Properties | |
| Medium diameter | (57.7 km ± 1.2) km |
| Albedo | 0.18 |
| Rotation period | 5 h 54 min |
| Absolute brightness | 8.7 likes |
| Spectral class | S. |
| history | |
| Explorer | August Kopff |
| Date of discovery | March 21, 1907 |
| Another name | 1907 YJ |
| 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. | |
(631) Philippina is an asteroid of the main belt that was discovered on March 21, 1907 by the German astronomer August Kopff in Heidelberg .
The asteroid was named after Philipp Kessler, a friend of the discoverer.