1354 Botha
1354 Botha, provisional designation 1935 GK, is an exceptionally dark background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 3 April 1935, by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after South African prime minister Louis Botha.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 3 April 1935 |
| Designations | |
MPC designation | (1354) Botha |
Named after | Louis Botha (South African prime minister) |
Alternative designations | 1935 GK · 1925 RF 1930 KG · 1931 TP 1935 JK · 1953 TO1 1953 TY2 |
Minor planet category | main-belt · (outer) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.55 yr (31,248 days) |
| Aphelion | 3.8022 AU |
| Perihelion | 2.4451 AU |
Semi-major axis | 3.1237 AU |
| Eccentricity | 0.2172 |
Orbital period (sidereal) | 5.52 yr (2,017 days) |
Mean anomaly | 255.58° |
Mean motion | 0° 10m 42.6s / day |
| Inclination | 5.9581° |
Longitude of ascending node | 28.715° |
| 250.45° | |
| Physical characteristics | |
| Dimensions | 38.41±12.74 km 41.732±0.504 km 42.54±0.69 km 46.567±0.550 km 48.75±5.8 km 48.82 km (derived) 70.34±0.88 km |
Synodic rotation period | 4 h (poor) |
| 0.014±0.003 0.0225±0.006 0.0246±0.0047 0.0295 (derived) 0.030±0.001 0.05±0.04 | |
| C (assumed) | |
| 11.00 · 11.03 · 11.20±0.35 · 11.30 | |
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