1197 Rhodesia
1197 Rhodesia, provisional designation 1931 LD, is a dark background asteroid from the outer regions of the asteroid belt, approximately 48 kilometers (30 miles) in diameter. It was discovered on 9 June 1931, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The likely C-type asteroid has a rotation period of 16.1 hours. It was named for Rhodesia, a former British colony and unrecognised state, which is now Zimbabwe.
Shape model of Rhodesia from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 9 June 1931 |
| Designations | |
MPC designation | (1197) Rhodesia |
Named after | Rhodesia (former state in southern Africa) |
Alternative designations | 1931 LD · 1925 AC 1970 HL |
Minor planet category | main-belt · (outer) background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 93.36 yr (34,098 d) |
| Aphelion | 3.5511 AU |
| Perihelion | 2.2215 AU |
Semi-major axis | 2.8863 AU |
| Eccentricity | 0.2303 |
Orbital period (sidereal) | 4.90 yr (1,791 d) |
Mean anomaly | 323.09° |
Mean motion | 0° 12m 3.6s / day |
| Inclination | 12.985° |
Longitude of ascending node | 255.74° |
| 277.16° | |
| Physical characteristics | |
| Dimensions | 48.0 km × 48.0 km |
Mean diameter | 47.50±3.4 km 47.741±0.163 km 48.92±0.98 km |
Synodic rotation period | 16.060±0.006 h |
| 0.070 0.075 0.0783 | |
| B–V = 0.740±030 C (assumed) | |
| 10.00 10.18 10.2 | |
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