(20545) Karenhowell Main-belt Asteroid
Discovered on 8 September 1999 by LINEAR at Socorro.
Karen Howell mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Hillel Academy, Fairfield, Connecticut.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Karenhowell is today
Seen from above the solar system on 2026-10-14: Karenhowell is 2.06 au from the Sun and 2.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20545 |
| Provisional designation | 1999 RS104 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.11 km (#14,946 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.241 |
| Rotation period | 28.3 hours |
| Absolute magnitude (H) | 14.95 |
| Orbital period | 3.50 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 2.03 – 2.58 au |
| Eccentricity | 0.120 |
| Inclination | 6.26° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Karen
- (4604) Stekarstrom
- (12516) Karenyoung
- (14182) Alley
- (15632) Magee-Sauer
- (17841) Karenlucci
- (18949) Tumaneng
- (19801) Karenlemmon
- (21393) Kalygeringer
- (21462) Karenedbal
- (22102) Karenlamb
- (23060) Shepherd
- (23884) Karenharvey
All asteroids named after someone called Karen
Also discovered on 8 September 1999
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- (12581) Rovinj
- (13817) Genobechetti
- (16066) Richardbressler
- (16070) Charops
- (19629) Serra
- (19694) Dunkelman
- (19695) Billnye
- (20544) Kimhansell
- (20546) Michaelfruhauf
- (20547) Michimani
- (20548) Milewski