(549873) Portsevskii Main-belt Asteroid
Discovered on 26 October 2011 by Kryachko, T., Satovski, B. at Zelenchukskaya Stn.
Konstantin Alekseevich Portsevskii (1922–2010) was a Soviet astronomer, researcher and science communicator. As director of the Moscow Planetarium, he created popular science lectures and taught astronomy classes, including classes at Argo astronomy school. He also created and hosted the educational TV show Astronomy.Naming citation (WGSBN Bull. 2, #5, 14), IAU / Minor Planet Center, via NASA/JPL
Where Portsevskii is today
Seen from above the solar system on 2026-10-14: Portsevskii is 3.07 au from the Sun and 3.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 549873 |
| Provisional designation | 2011 UA205 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.82 |
| Orbital period | 4.29 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.20 – 3.08 au |
| Eccentricity | 0.166 |
| Inclination | 13.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.22 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Konstantin
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- (5415) Lyanzuridi
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- (48425) Tischendorf
- (301522) Chaykin
- (584947) Shistovsky
All asteroids named after someone called Konstantin