(20840) Borishanin Main-belt Asteroid
Discovered on 25 October 2000 by LINEAR at Socorro.
Boris Hanin (b. 1988) was awarded second place in the 2004 Intel International Science and Engineering Fair for his mathematics project. He attends the Pittsford Sutherland High School, Pittsford, New York, U.S.A.Naming citation (20041226/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Borishanin is today
Seen from above the solar system on 2026-10-14: Borishanin is 2.12 au from the Sun and 2.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20840 |
| Provisional designation | 2000 UF58 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.0 km (#4,547 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0370 |
| Absolute magnitude (H) | 14.13 |
| Orbital period | 4.13 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.12 – 3.03 au |
| Eccentricity | 0.177 |
| Inclination | 9.11° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 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 25 October 2000
- (20846) Liyulin
- (22134) Kirian
- (23213) Ameliachang
- (23217) Nayana
- (27584) Barbaravelez
- (34611) Nacogdoches
- (34625) Bollimpalli
- (34628) Samaboyea
- (123290) Manoa