(18851) Winmesser Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Winston Harmon Messer (b. 1986) was awarded third place in the 2003 Intel International Science and Engineering Fair for his medicine and health project. He attends the Presbyterian Christian School, Hattiesburg, Mississippi, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Winmesser is today
Seen from above the solar system on 2026-10-14: Winmesser is 2.11 au from the Sun and 2.49 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18851 |
| Provisional designation | 1999 RP84 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.61 km (#6,997 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0580 |
| Rotation period | 27.3 hours |
| Absolute magnitude (H) | 14.45 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.97 – 2.78 au |
| Eccentricity | 0.171 |
| Inclination | 3.58° |
| Closest distance between its orbit and Earth's (MOID) | 0.977 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Winston
All asteroids named after someone called Winston
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