1013 Tombecka
1013 Tombecka (prov. designation: A924 BL or 1924 PQ) is a metallic Mitidika asteroid from the central regions of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 17 January 1924, by Russian-French astronomer Benjamin Jekhowsky at the Algiers Observatory in North Africa. The asteroid was named after the secretary of the Faculty of Sciences of Paris, D. Tombecka.
Lightcurve-modeled shape of Tombecka | |
| Discovery | |
|---|---|
| Discovered by | B. Jekhovsky |
| Discovery site | Algiers Obs. |
| Discovery date | 17 January 1924 |
| Designations | |
MPC designation | (1013) Tombecka |
Named after | D. Tombeck (Faculty of Sciences of Paris) |
Alternative designations | 1924 PQ · 1953 TP3 1962 VK · A905 UG A907 GW · A924 BL |
Minor planet category | main-belt · (middle) Mitidika · Eunomia |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 111.69 yr (40,795 days) |
| Aphelion | 3.2444 AU |
| Perihelion | 2.1230 AU |
Semi-major axis | 2.6837 AU |
| Eccentricity | 0.2089 |
Orbital period (sidereal) | 4.40 yr (1,606 days) |
Mean anomaly | 95.024° |
Mean motion | 0° 13m 27.12s / day |
| Inclination | 11.901° |
Longitude of ascending node | 27.248° |
| 99.992° | |
| Physical characteristics | |
| Dimensions | 31.93±1.5 km 34.057±0.434 km 34.28±0.62 km 34.613±0.290 km 34.62±10.20 km 35.18±2.24 36.62±0.58 km |
| Mass | (0.17±1.43)×1018 kg |
Mean density | 7.50 g/cm3 (no porosity) |
Synodic rotation period | 6.0 h 6.050±0.001 h 6.05017 h 6.0508±0.0001 h 6.053±0.002 h |
| 0.120±0.005 0.13±0.13 0.132±0.014 0.135±0.016 0.1386±0.0321 0.1552±0.016 | |
| Tholen = XSC M · Xk B–V = 0.755 U–B = 0.370 | |
| 10.12 · 10.30 · 10.52±1.05 | |
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