1193 Africa
1193 Africa, provisional designation 1931 HB, is a stony Eunomian asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered by South African astronomer Cyril Jackson at Johannesburg Observatory on 24 April 1931. The asteroid was named for the African continent.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 24 April 1931 |
| Designations | |
MPC designation | (1193) Africa |
Named after | Africa (continent) |
Alternative designations | 1931 HB |
Minor planet category | main-belt · (middle) Eunomia |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.20 yr (31,484 days) |
| Aphelion | 2.9728 AU |
| Perihelion | 2.3198 AU |
Semi-major axis | 2.6463 AU |
| Eccentricity | 0.1234 |
Orbital period (sidereal) | 4.30 yr (1,572 days) |
Mean anomaly | 9.0113° |
Mean motion | 0° 13m 44.4s / day |
| Inclination | 14.141° |
Longitude of ascending node | 49.538° |
| 183.92° | |
| Physical characteristics | |
| Dimensions | 12.220±0.102 km 13 km (est. at 0.21) |
| 0.21 (derived) 0.247±0.038 | |
| S(derived) | |
| 11.8 | |
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