(7550) Woolum Main-belt Asteroid
Discovered on 1 March 1981 by S. J. Bus at Siding Spring.
Dorothy S. Woolum (b. 1942) is professor emeritus at California State University, Fullerton. She is a leader in merging the fields of astrophysics and meteoritics to understand the origin and evolution of the solar system, particularly through geochemical studies of noble gases.Naming citation (20060809/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Woolum is today
Seen from above the solar system on 2026-10-14: Woolum is 2.53 au from the Sun and 3.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7550 |
| Provisional designation | 1981 EV8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.07 km (#15,048 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.213 |
| Rotation period | 3.14 hours |
| Absolute magnitude (H) | 14.61 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.84 – 2.74 au |
| Eccentricity | 0.196 |
| Inclination | 5.53° |
| Closest distance between its orbit and Earth's (MOID) | 0.838 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Dorothy
All asteroids named after someone called Dorothy
Also discovered on 1 March 1981
- (2788) Andenne
- (3016) Meuse
- (3029) Sanders
- (3030) Vehrenberg
- (3042) Zelinsky
- (3058) Delmary
- (3075) Bornmann
- (3135) Lauer
- (3308) Ferreri
- (3472) Upgren
- (3498) Belton
- (3503) Brandt