1429 Pemba
1429 Pemba, provisional designation 1937 NH, is a stony background asteroid from the central regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 2 July 1937, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the Pemba Island off the coast of Tanzania.
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 2 July 1937 |
| Designations | |
MPC designation | (1429) Pemba |
Named after | Pemba Island (African East coast) |
Alternative designations | 1937 NH · 1949 JK |
Minor planet category | main-belt · (inner) background |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 79.93 yr (29,193 days) |
| Aphelion | 3.4109 AU |
| Perihelion | 1.7004 AU |
Semi-major axis | 2.5557 AU |
| Eccentricity | 0.3347 |
Orbital period (sidereal) | 4.09 yr (1,492 days) |
Mean anomaly | 207.67° |
Mean motion | 0° 14m 28.32s / day |
| Inclination | 7.7492° |
Longitude of ascending node | 47.700° |
| 297.82° | |
| Physical characteristics | |
| Dimensions | 8.71±1.86 km 9.874±0.051 km 10.37 km (taken) 10.371 km 10.531±0.041 km 10.75±0.67 km |
Synodic rotation period | 20 h |
| 0.1316 0.154±0.021 0.1598±0.0235 0.19±0.11 0.196±0.022 | |
| S (assumed) | |
| 12.4 · 12.50 · 12.74 · 12.74±0.2 | |
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