1264 Letaba
1264 Letaba, provisional designation 1933 HG, is a carbonaceous asteroid and possible tumbler from the background population of the outer asteroid belt, approximately 70 kilometers in diameter. It was discovered on 21 April 1933, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the Letaba River in eastern South Africa.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 21 April 1933 |
| Designations | |
MPC designation | (1264) Letaba |
Named after | Letaba River (South African river) |
Alternative designations | 1933 HG · 1930 WC 1954 YB · 1962 HJ 1964 VB |
Minor planet category | main-belt · (outer) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.54 yr (30,877 days) |
| Aphelion | 3.3108 AU |
| Perihelion | 2.4225 AU |
Semi-major axis | 2.8667 AU |
| Eccentricity | 0.1549 |
Orbital period (sidereal) | 4.85 yr (1,773 days) |
Mean anomaly | 112.30° |
Mean motion | 0° 12m 11.16s / day |
| Inclination | 24.953° |
Longitude of ascending node | 235.05° |
| 31.529° | |
| Physical characteristics | |
| Dimensions | 66.040±0.405 km 67.76±17.00 km 67.79±17.67 km 70.180±23.32 km 70.34±0.77 km 73.629±0.870 km 74.35 km (derived) 74.74±2.1 km |
Synodic rotation period | 12 h 16 h 32.16±0.03 h 32.74±0.02 h (best) 33.27±0.01 h 63.74±0.01 h |
| 0.0407±0.0432 0.0462 (derived) 0.05±0.07 0.05±0.09 0.0725±0.004 0.0746±0.0114 0.082±0.002 0.093±0.027 | |
| SMASS = C | |
| 9.10 · 9.60 · 9.67 · 9.70 · 9.87±0.22 | |
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