1631 Kopff
1631 Kopff (provisional designation 1936 UC) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 11 October 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after German astronomer August Kopff.
| Discovery | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Obs. |
| Discovery date | 11 October 1936 |
| Designations | |
MPC designation | (1631) Kopff |
Named after | August Kopff (astronomer) |
Alternative designations | 1936 UC · 1926 TH 1935 FG · 1946 SA 1952 HV2 |
Minor planet category | main-belt · Flora |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 90.37 yr (33,006 days) |
| Aphelion | 2.7129 AU |
| Perihelion | 1.7572 AU |
Semi-major axis | 2.2350 AU |
| Eccentricity | 0.2138 |
Orbital period (sidereal) | 3.34 yr (1,220 days) |
Mean anomaly | 107.17° |
| Inclination | 7.4943° |
Longitude of ascending node | 16.826° |
| 315.11° | |
| Physical characteristics | |
| Dimensions | 8.636±0.395 km 9.58±0.21 km 9.66±1.2 km 9.71 km (derived) |
Synodic rotation period | 6.683±0.001 h |
| 0.2497±0.074 0.259±0.012 0.2710 (derived) 0.342±0.061 | |
| S | |
| 12.1 · 12.2 · 12.57±0.35 | |
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