(22840) Villarreal Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Margo Villarreal mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. She teaches at the Buckner Fanning Christian School, San Antonio, Texas.Naming citation (20061009/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Villarreal is today
Seen from above the solar system on 2026-10-14: Villarreal is 2.80 au from the Sun and 2.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22840 |
| Provisional designation | 1999 RB98 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.63 km (#13,638 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.256 |
| Absolute magnitude (H) | 14.68 |
| Orbital period | 4.66 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.78 – 2.80 au |
| Eccentricity | 0.00400 |
| Inclination | 5.95° |
| Closest distance between its orbit and Earth's (MOID) | 1.78 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 September 1999
- (12126) Chersidamas
- (12577) Samra
- (12578) Bensaur
- (12585) Katschwarz
- (12586) Juliaspeyer
- (12588) Arseneau
- (12604) Lisatate
- (12924) Madisonicole
- (13818) Ullery
- (14214) Hirsch
- (15503) Estradioto
- (16067) Brandonfan