(21986) Alexanduribe Main-belt Asteroid
Discovered on 2 December 1999 by LINEAR at Socorro.
Alexander Tyler Uribe (b. 1990) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his physical science project. He attends the Willow Creek Middle School, North Lehi, Utah.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Alexanduribe is today
Seen from above the solar system on 2026-10-14: Alexanduribe is 2.63 au from the Sun and 3.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21986 |
| Provisional designation | 1999 XO17 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.08 km (#15,024 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.225 |
| Absolute magnitude (H) | 14.63 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.06 – 2.69 au |
| Eccentricity | 0.133 |
| Inclination | 7.46° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Alexander
- (1688) Wilkens
- (4837) Bickerton
- (6941) Dalgarno
- (7660) Alexanderwilson
- (8479) Held
- (8486) Asherschel
- (8795) Dudorov
- (11781) Alexroberts
- (15434) Mittal
- (15608) Owens
- (17073) Alexblank
- (21397) Leontovich
All asteroids named after someone called Alexander
Also discovered on 2 December 1999
More named asteroids discovered by LINEAR
- (7904) Morrow
- (8744) Cilla
- (8745) Delaney
- (8954) Baral
- (9126) Samcoulson
- (9243) Alag
- (9454) Ardeishar
- (9458) Beaumont
- (9459) Gracecai
- (9461) Cotingkeh
- (9463) Criscione
- (9465) Fergusonsam
← (21985) Sejna · (21989) Werntz →