3406 Omsk
3406 Omsk, provisional designation 1969 DA, is a background asteroid from the central regions of the asteroid belt, approximately 15 kilometers (9.3 miles) in diameter. It was discovered on 21 February 1969, by Soviet astronomer Bella Burnasheva at the Crimean Astrophysical Observatory on the Crimean peninsula in Nauchnij. The possibly metallic M/X-type asteroid has a rotation period of 7.3 hours. It was named for the Russia city of Omsk.
| Discovery | |
|---|---|
| Discovered by | B. Burnasheva |
| Discovery site | Crimean Astrophysical Obs. |
| Discovery date | 21 February 1969 |
| Designations | |
MPC designation | (3406) Omsk |
Named after | Omsk (Russian city) |
Alternative designations | 1969 DA · 1951 KA1 1983 CH3 |
Minor planet category | main-belt · (middle) background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 48.69 yr (17,783 d) |
| Aphelion | 3.1645 AU |
| Perihelion | 2.4279 AU |
Semi-major axis | 2.7962 AU |
| Eccentricity | 0.1317 |
Orbital period (sidereal) | 4.68 yr (1,708 d) |
Mean anomaly | 124.44° |
Mean motion | 0° 12m 38.88s / day |
| Inclination | 8.3583° |
Longitude of ascending node | 269.84° |
| 310.19° | |
| Physical characteristics | |
Mean diameter | 13.43±0.58 km 14.42 km (derived) 14.68±1.3 km 16.058±0.217 km 16.59±0.48 km |
Synodic rotation period | 7.275±0.006 h |
| 0.1569±0.0358 0.1619 (derived) 0.201±0.013 0.224±0.023 0.2476±0.050 | |
| SMASS = X M · C | |
| 11.30 11.60 11.8 12.25±0.42 | |
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