1242 Zambesia
1242 Zambesia (prov. designation: 1932 HL) is a dark background asteroid from the central regions of the asteroid belt, approximately 48 kilometers (30 miles) in diameter. It was discovered on 28 April 1932, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the large Zambezi basin in southern Africa.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 28 April 1932 |
| Designations | |
MPC designation | (1242) Zambesia |
Named after | Zambezi basin (southern Africa) |
Alternative designations | 1932 HL · 1947 TE 1948 AC · 1967 EF A908 BF |
Minor planet category | main-belt · (middle) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.42 yr (39,966 days) |
| Aphelion | 3.2569 AU |
| Perihelion | 2.2201 AU |
Semi-major axis | 2.7385 AU |
| Eccentricity | 0.1893 |
Orbital period (sidereal) | 4.53 yr (1,655 days) |
Mean anomaly | 139.42° |
Mean motion | 0° 13m 3s / day |
| Inclination | 10.163° |
Longitude of ascending node | 350.01° |
| 52.968° | |
| Physical characteristics | |
| Dimensions | 42.16±11.24 km 47.54 km (derived) 47.594±0.347 km 47.70±1.6 km 52.668±0.952 km 53.70±3.05 km 62.23±0.79 km 72.818±22.99 km |
Synodic rotation period | 15.72±0.14 h 17.305 h >24 h (poor) |
| 0.0252±0.0184 0.04±0.01 0.043±0.001 0.045±0.032 0.0541 (derived) 0.058±0.010 0.0581±0.0040 0.0708±0.005 | |
| C (S3OS2) | |
| 10.10 · 10.40 · 10.41 · 10.87 | |
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