(1631) Kopff Main-belt Asteroid
Discovered on 11 October 1936 by Y. Vaisala at Turku.
Where Kopff is today
Seen from above the solar system on 2026-10-14: Kopff is 1.77 au from the Sun and 1.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1631 |
| Provisional designation | 1936 UC |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.64 km (#6,032 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.342 |
| Rotation period | 6.68 hours |
| Absolute magnitude (H) | 12.23 |
| Orbital period | 3.34 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 1.76 – 2.71 au |
| Eccentricity | 0.214 |
| Inclination | 7.49° |
| Closest distance between its orbit and Earth's (MOID) | 0.755 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by Y. Vaisala
- (1391) Carelia
- (1398) Donnera
- (1405) Sibelius
- (1406) Komppa
- (1407) Lindelof
- (1421) Esperanto
- (1424) Sundmania
- (1446) Sillanpaa
- (1447) Utra
- (1448) Lindbladia
- (1449) Virtanen
- (1450) Raimonda
← (1630) Milet · (1632) Siebohme →