4142 Dersu-Uzala
4142 Dersu-Uzala, provisional designation 1981 KE, is a Hungaria asteroid, sizable Mars-crosser and potentially slow rotator from the innermost region of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered by Czech astronomer Zdeňka Vávrová at Kleť Observatory on 28 May 1981. The rare A-type asteroid has a rotation period of 140 hours. It was named after the Siberian trapper and hunter Dersu Uzala.
| Discovery | |
|---|---|
| Discovered by | Z. Vávrová |
| Discovery site | Kleť Obs. |
| Discovery date | 28 May 1981 |
| Designations | |
MPC designation | (4142) Dersu-Uzala |
Named after | Dersu Uzala (Siberian trapper and hunter) |
Alternative designations | 1981 KE · 1970 AB 1982 VB |
Minor planet category | Mars-crosser Hungaria |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 48.38 yr (17,672 d) |
| Aphelion | 2.2005 AU |
| Perihelion | 1.6230 AU |
Semi-major axis | 1.9117 AU |
| Eccentricity | 0.1510 |
Orbital period (sidereal) | 2.64 yr (965 d) |
Mean anomaly | 71.888° |
Mean motion | 0° 22m 22.44s / day |
| Inclination | 26.494° |
Longitude of ascending node | 60.661° |
| 55.384° | |
| Physical characteristics | |
Mean diameter | 6.01±1.81 km 6.02±0.60 km 6.34±0.19 km |
Synodic rotation period | 140±3 h |
| 0.164 0.30 0.307 | |
| SMASS = A Srw | |
| 13.00 13.1 13.42 13.60 | |
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