(15669) Pshenichner Main-belt Asteroid
Discovered on 19 September 1974 by L. I. Chernykh at Nauchnyj.
Boris Grigor'evich Pshenichner (b. 1933) dealt with space education for 50 years. Since 1958 he worked in the Moscow planetarium, and since 1962 in the Moscow palace for children's creativity. A member of the Russian space academy , he is head of the Moscow scientific-educational program “Experiment in Space”.Naming citation (20081212/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Pshenichner is today
Seen from above the solar system on 2026-10-14: Pshenichner is 2.29 au from the Sun and 3.13 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15669 |
| Provisional designation | 1974 ST1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.30 km (#14,491 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.178 |
| Absolute magnitude (H) | 14.68 |
| Orbital period | 3.78 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 1.92 – 2.93 au |
| Eccentricity | 0.208 |
| Inclination | 2.77° |
| Closest distance between its orbit and Earth's (MOID) | 0.910 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Boris
- (1954) Kukarkin
- (2126) Gerasimovich
- (5453) Zakharchenya
- (6284) Borisivanov
- (6811) Kashcheev
- (7278) Shtokolov
- (9145) Shustov
- (9148) Boriszaitsev
- (10424) Gaillard
- (10990) Okunev
- (11015) Romanenko
- (14346) Zhilyaev
All asteroids named after someone called Boris
Also discovered on 19 September 1974
- (2386) Nikonov
- (2419) Moldavia
- (2756) Dzhangar
- (2977) Chivilikhin
- (3232) Brest
- (3384) Daliya
- (3429) Chuvaev
- (4919) Vishnevskaya
- (4980) Magomaev
- (5014) Gorchakov
- (5043) Zadornov
- (5078) Solovjev-Sedoj