(65100) Birtwhistle Main-belt Asteroid
Discovered on 8 February 2002 by Juels, C. W., Holvorcem, P. R. at Fountain Hills.
British amateur astronomer Peter Birtwhistle (b. 1958) was measuring positions of comets and NEAs photographically during 1982-1986 and in 2002 began CCD astrometry in Great Shefford, Berkshire. On 2003 Sept. 29 he provided confirmation of 2003 SQ222, whose passage at 84 000 km from the earth is the closest known.Naming citation (20040107/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Birtwhistle is today
Seen from above the solar system on 2026-10-14: Birtwhistle is 3.06 au from the Sun and 3.13 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 65100 |
| Provisional designation | 2002 CR15 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.47 km (#5,439 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0590 |
| Absolute magnitude (H) | 14.09 |
| Orbital period | 5.60 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.87 – 3.43 au |
| Eccentricity | 0.0882 |
| Inclination | 22.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.95 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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