(9529) Protopapa Main-belt Asteroid
Discovered on 2 March 1981 by S. J. Bus at Siding Spring.
Silvia Protopapa (b. 1981) is an assistant research scientist at the University of Maryland. Her research focuses on the properties of ice and refractory elements present in comets and on the surfaces of Kuiper Belt objects.Naming citation (MPC batch dated 2014-07-12), IAU / Minor Planet Center, via NASA/JPL
Where Protopapa is today
Seen from above the solar system on 2026-10-14: Protopapa is 2.54 au from the Sun and 3.51 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9529 |
| Provisional designation | 1981 EF25 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.55 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.03 – 2.80 au |
| Eccentricity | 0.159 |
| Inclination | 0.338° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Silvia
All asteroids named after someone called Silvia
Also discovered on 2 March 1981
- (2884) Reddish
- (2919) Dali
- (2980) Cameron
- (2981) Chagall
- (2990) Trimberger
- (3000) Leonardo
- (3121) Tamines
- (3122) Florence
- (3207) Spinrad
- (3252) Johnny
- (3304) Pearce
- (3524) Schulz