(21585) Polmear Main-belt Asteroid
Discovered on 26 September 1998 by LINEAR at Socorro.
Michael McCord Polmear (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his medicine and health team project. He attends the Cherry Creek High School, Greenwood Village, Colorado, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Polmear is today
Seen from above the solar system on 2026-10-14: Polmear is 2.95 au from the Sun and 2.79 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21585 |
| Provisional designation | 1998 SX126 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.41 km (#9,874 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.289 |
| Absolute magnitude (H) | 13.67 |
| Orbital period | 4.49 years |
| Semi-major axis | 2.72 au |
| Perihelion – aphelion | 2.49 – 2.95 au |
| Eccentricity | 0.0841 |
| Inclination | 8.30° |
| Closest distance between its orbit and Earth's (MOID) | 1.48 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Michael
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