(20839) Bretharrison Main-belt Asteroid
Discovered on 24 October 2000 by LINEAR at Socorro.
Brett Harrison (b. 1988) was awarded second place in the 2004 Intel International Science and Engineering Fair for his mathematics project. He attends the Half Hollow Hills High School West, Dix Hills, New York, U.S.A.Naming citation (20041226/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Bretharrison is today
Seen from above the solar system on 2026-10-14: Bretharrison is 2.55 au from the Sun and 1.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20839 |
| Provisional designation | 2000 US55 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.01 km (#15,182 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.256 |
| Absolute magnitude (H) | 14.7 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.54 – 2.86 au |
| Eccentricity | 0.0605 |
| Inclination | 3.62° |
| Closest distance between its orbit and Earth's (MOID) | 1.53 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Brett
- (7638) Gladman
- (9026) Denevi
- (18839) Whiteley
- (26613) Brettwhite
- (27426) Brettlawrie
- (28130) Troemper
- (134088) Brettperkins
All asteroids named after someone called Brett
Also discovered on 24 October 2000
- (19855) Borisalexeev
- (19860) Anahtar
- (19861) Auster
- (20821) Balasridhar
- (20822) Lintingnien
- (20823) Liutingchun
- (20828) Linchen
- (20830) Luyajia
- (20831) Zhangyi
- (20832) Santhikodali
- (20834) Allihewlett
- (20835) Eliseadcock