(20537) Sandraderosa Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Sandra DeRosa mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Ledyard Middle School, Gales Ferry, Connecticut.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sandraderosa is today
Seen from above the solar system on 2026-10-14: Sandraderosa is 2.28 au from the Sun and 2.97 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20537 |
| Provisional designation | 1999 RO82 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 15.6 hours |
| Absolute magnitude (H) | 14.75 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 2.19 – 2.43 au |
| Eccentricity | 0.0535 |
| Inclination | 7.07° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Sandra
- (7377) Pizzarello
- (20539) Gadberry
- (20585) Wentworth
- (28680) Sandralitvin
- (31268) Welty
- (78453) Bullock
- (114612) Sandrasavaglio
- (283277) Faber
- (761081) Sandraeglite
All asteroids named after someone called Sandra
Also discovered on 7 September 1999
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- (12577) Samra
- (12578) Bensaur
- (12585) Katschwarz
- (12586) Juliaspeyer
- (12588) Arseneau
- (12604) Lisatate
- (12924) Madisonicole
- (13818) Ullery
- (14214) Hirsch
- (15503) Estradioto
- (16067) Brandonfan