(21991) Zane Main-belt Asteroid
Discovered on 6 December 1999 by LINEAR at Socorro.
Robert Teruo Zane (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his botany & zoology project. He attends the Mid-Pacific Institute, Honolulu, Hawaii.Naming citation (20051019/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Zane as a baby name🐶 Zane as a dog name
Where Zane is today
Seen from above the solar system on 2026-10-14: Zane is 2.82 au from the Sun and 3.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21991 |
| Provisional designation | 1999 XM23 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.98 km (#12,770 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.193 |
| Absolute magnitude (H) | 14.75 |
| Orbital period | 4.77 years |
| Semi-major axis | 2.83 au |
| Perihelion – aphelion | 2.58 – 3.09 au |
| Eccentricity | 0.0900 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.57 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
- (1955) McMath
- (3514) Hooke
- (3875) Staehle
- (4564) Clayton
- (4809) Robertball
- (5109) Robertmiller
- (5308) Hutchison
- (5477) Holmes
- (5585) Parks
- (5636) Jacobson
- (5739) Robertburns
- (5817) Robertfrazer
All asteroids named after someone called Robert
Also discovered on 6 December 1999
- (13840) Wayneanderson
- (13841) Blankenship
- (13843) Cowenbrown
- (14224) Gaede
- (14678) Pinney
- (16113) Ahmed
- (16114) Alyono
- (16116) Balakrishnan
- (16117) Herbst
- (16142) Leung
- (20713) Sheward
- (21990) Garretyazzie