(631) Philippina Main-belt Asteroid
Discovered on 21 March 1907 by A. Kopff at Heidelberg.
Where Philippina is today
Seen from above the solar system on 2026-10-14: Philippina is 2.76 au from the Sun and 2.04 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 631 |
| Provisional designation | A907 FD |
| Orbit class | Main-belt Asteroid |
| Diameter | 50.5 km (#740 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.229 |
| Rotation period | 5.90 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.62 |
| Orbital period | 4.66 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.55 – 3.03 au |
| Eccentricity | 0.0852 |
| Inclination | 18.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by A. Kopff
- (579) Sidonia
- (582) Olympia
- (584) Semiramis
- (585) Bilkis
- (589) Croatia
- (591) Irmgard
- (593) Titania
- (595) Polyxena
- (596) Scheila
- (606) Brangane
- (607) Jenny
- (608) Adolfine
← (630) Euphemia · (632) Pyrrha →