1428 Mombasa
1428 Mombasa, provisional designation 1937 NO, is a dark asteroid from the middle region of the asteroid belt, approximately 56 kilometers in diameter.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 5 July 1937 |
| Designations | |
MPC designation | (1428) Mombasa |
Named after | Mombasa (city, port) |
Alternative designations | 1937 NO · 1933 WO 1949 FA · 1957 YZ |
Minor planet category | main-belt · (middle) |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.74 yr (30,219 days) |
| Aphelion | 3.2039 AU |
| Perihelion | 2.4154 AU |
Semi-major axis | 2.8096 AU |
| Eccentricity | 0.1403 |
Orbital period (sidereal) | 4.71 yr (1,720 days) |
Mean anomaly | 263.81° |
Mean motion | 0° 12m 33.48s / day |
| Inclination | 17.305° |
Longitude of ascending node | 115.72° |
| 252.61° | |
| Physical characteristics | |
| Dimensions | 52.464±0.268 km 53.35±13.28 km 55.34±0.70 km 56.63±2.0 km 56.83 km (derived) 57.59±19.41 km 62.45±0.73 km 127.203±29.18 km |
Synodic rotation period | 16.67±0.01 h 17.12±0.01 h 17.6±0.2 h |
| 0.0010±0.0099 0.0240±0.002 0.025±0.001 0.038±0.004 0.04±0.04 0.0415 (derived) 0.06±0.06 | |
| SMASS = Xc · P · C | |
| 9.95±0.74 · 10.20 · 10.27 · 10.3 · 10.9 | |
It was discovered on 5 July 1937, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory, South Africa, and later named after Mombasa, Kenya.
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