(549650) Bilibin Main-belt Asteroid
Discovered on 28 August 2011 by Kryachko, T., Satovski, B. at Zelenchukskaya Stn.
Yuri A. Bilibin (1901–1952) was a prominent Soviet geologist and academician. He was instrumental in the surveying of the last unmapped regions of the USSR and he discovered major gold fields in Kolyma and Chukotka.Naming citation (WGSBN Bull. 6, #16, 11), IAU / Minor Planet Center, via NASA/JPL
Where Bilibin is today
Seen from above the solar system on 2026-10-14: Bilibin is 3.08 au from the Sun and 4.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 549650 |
| Provisional designation | 2011 QR45 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.17 |
| Orbital period | 4.20 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 2.10 – 3.10 au |
| Eccentricity | 0.192 |
| Inclination | 32.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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