(20637) Rosemarydorsey Main-belt Asteroid
Discovered on 3 October 1999 by LINEAR at Socorro.
Rosemary C. Dorsey (b. 1996) is a New Zealand astronomer and a postdoctoral researcher at the University of Helsinki in Finland. She specializes in survey simulations with a focus on asteroids, Centaurs, and interstellar objects.Naming citation (WGSBN Bull. 6, #11, 31), IAU / Minor Planet Center, via NASA/JPL
Where Rosemarydorsey is today
Seen from above the solar system on 2026-10-14: Rosemarydorsey is 2.68 au from the Sun and 2.77 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20637 |
| Provisional designation | 1999 TX103 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.28 km (#14,538 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.376 |
| Absolute magnitude (H) | 14.43 |
| Orbital period | 3.68 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.84 – 2.93 au |
| Eccentricity | 0.228 |
| Inclination | 11.0° |
| Closest distance between its orbit and Earth's (MOID) | 0.854 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Rosemary
All asteroids named after someone called Rosemary
Also discovered on 3 October 1999
- (16085) Laffan
- (19713) Ibaraki
- (20658) Bushmarinov
- (21813) Danwinegar
- (21814) Shanawolff
- (22906) Lisauckis
- (22907) van Voorthuijsen
- (22908) Bayefsky-Anand
- (22957) Vaintrob
- (25364) Allisonbaas
- (25365) Bernreuter
- (44711) Carp