1378 Leonce
1378 Leonce, provisional designation 1936 DB, is a dark Nysian asteroid from the inner regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 21 February 1936, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle, who named it after his father, Leonce Rigaux.
Lightcurve-based 3D-model of Leonce | |
| Discovery | |
|---|---|
| Discovered by | F. Rigaux |
| Discovery site | Uccle Obs. |
| Discovery date | 21 February 1936 |
| Designations | |
MPC designation | (1378) Leonce |
Named after | Leonce Rigaux (discoverer's father) |
Alternative designations | 1936 DB · 1958 FG 1958 GY · 1962 KB A915 RC · A915 WA |
Minor planet category | main-belt · (inner) Nysa |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 101.54 yr (37,088 days) |
| Aphelion | 2.7300 AU |
| Perihelion | 2.0187 AU |
Semi-major axis | 2.3743 AU |
| Eccentricity | 0.1498 |
Orbital period (sidereal) | 3.66 yr (1,336 days) |
Mean anomaly | 38.698° |
Mean motion | 0° 16m 9.84s / day |
| Inclination | 3.5913° |
Longitude of ascending node | 43.568° |
| 202.15° | |
| Physical characteristics | |
| Dimensions | 14.94±3.81 km 18.16 km (derived) 18.18±1.4 km 20.54±0.13 km 21.228±0.070 km 22.20±0.33 km 22.456±0.170 km |
Synodic rotation period | 4.3250±0.0002 h 4.325±0.001 h 4.32527±0.00005 h 4.3586±0.0002 h |
| 0.0348±0.0046 0.053±0.002 0.061±0.002 0.0706 (derived) 0.0773±0.013 0.10±0.05 | |
| C (assumed) | |
| 11.94±0.22 · 12.10 · 12.20 | |
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