(8561) Sikoruk Main-belt Asteroid
Discovered on 26 September 1995 by at Zelenchukskaya Stn 65121 Kryachko, T. V..
Leonid Leonidovich Sikoruk (b. 1937) is an astronomy popularizer, telescope builder, astrophotographer and film director in Russia. The name was suggested by forum users on www.astronomy.ru, many of whom became amateur astronomers owing to Leonid Sikoruk.Naming citation (20090209/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sikoruk is today
Seen from above the solar system on 2026-10-14: Sikoruk is 3.54 au from the Sun and 4.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8561 |
| Provisional designation | 1995 SO29 |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.4 km (#3,932 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0660 |
| Absolute magnitude (H) | 13.44 |
| Orbital period | 5.47 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.43 – 3.78 au |
| Eccentricity | 0.217 |
| Inclination | 2.05° |
| Closest distance between its orbit and Earth's (MOID) | 1.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Leonid
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All asteroids named after someone called Leonid