(20580) Marilpeters Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Marilyn Peters mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the St. Vincent de Paul Parish School, Cape Girardeau, Missouri.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Marilpeters is today
Seen from above the solar system on 2026-10-14: Marilpeters is 2.83 au from the Sun and 2.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20580 |
| Provisional designation | 1999 RG151 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.66 km (#13,555 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.252 |
| Rotation period | 3.14 hours |
| Absolute magnitude (H) | 14.66 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 1.91 – 2.84 au |
| Eccentricity | 0.195 |
| Inclination | 3.12° |
| Closest distance between its orbit and Earth's (MOID) | 0.895 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marilyn
- (5281) Lindstrom
- (10701) Marilynsimons
- (14693) Selwyn
- (20124) Marilynfogel
- (29842) Marilynsoper
- (63363) Guengerich
All asteroids named after someone called Marilyn
Also discovered on 9 September 1999
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- (12130) Mousa
- (12589) Davidanand
- (12590) Ballantine
- (12591) Bergey
- (12592) Brianchen
- (12593) Shashlov
- (12594) Sidorclare
- (12595) Amandashaw
- (12596) Shukla
- (12597) Williamdaniel
- (12598) Sierra