1305 Pongola
1305 Phongolo, provisional designation 1928 OC, is a background asteroid from the outer regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 19 July 1928, by English astronomer Harry Edwin Wood at the Union Observatory in Johannesburg, South Africa. The asteroid was named for the South African Pongola River.
| Discovery | |
|---|---|
| Discovered by | H. E. Wood |
| Discovery site | Johannesburg Obs. |
| Discovery date | 19 July 1928 |
| Designations | |
MPC designation | (1305) Pongola |
Named after | Pongola River (South Africa river) |
Alternative designations | 1928 OC · 1927 FD 1929 SQ · 1932 FA 1933 MB · 1979 NE |
Minor planet category | main-belt · (outer) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 90.59 yr (33,087 days) |
| Aphelion | 3.2336 AU |
| Perihelion | 2.7909 AU |
Semi-major axis | 3.0123 AU |
| Eccentricity | 0.0735 |
Orbital period (sidereal) | 5.23 yr (1,910 days) |
Mean anomaly | 89.261° |
Mean motion | 0° 11m 18.6s / day |
| Inclination | 2.3174° |
Longitude of ascending node | 62.956° |
| 146.96° | |
| Physical characteristics | |
| Dimensions | 24.110±0.277 km 25.12±0.91 km 25.124±0.200 km 41.45 km (derived) |
Synodic rotation period | 8 h 8.03 h 8.0585±0.0003 h 8.059±0.0015 h 8.06±0.02 h 8.335±0.002 h |
| 0.057 (assumed) 0.157±0.012 0.1576±0.0296 0.169±0.038 | |
| C (suspected) B–V = 0.700 | |
| 10.426±0.002 (R) · 10.64 · 10.65 | |
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