(21587) Christopynn Main-belt Asteroid
Discovered on 26 September 1998 by LINEAR at Socorro.
Christopher Donald Pynn (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his chemistry team project. He attends the Half Hollow Hills High School West, Dix Hills, New York, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Christopynn is today
Seen from above the solar system on 2026-10-14: Christopynn is 2.66 au from the Sun and 2.46 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21587 |
| Provisional designation | 1998 SE132 |
| Orbit class | Main-belt Asteroid |
| Diameter | 20.5 km (#2,142 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0420 |
| Rotation period | 19.5 hours |
| Absolute magnitude (H) | 12.67 |
| Orbital period | 4.81 years |
| Semi-major axis | 2.85 au |
| Perihelion – aphelion | 2.65 – 3.05 au |
| Eccentricity | 0.0695 |
| Inclination | 12.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.67 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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