(15849) Billharper Main-belt Asteroid
Discovered on 18 December 1995 by Spacewatch at Kitt Peak.
William Leonard Harper (b. 1943) specializes in the philosophy of science. He earned a Ph.D. at the University of Rochester and has been in the department of philosophy at the University of Western Ontario since 1970. The name was suggested by R. Jedicke and P. Jedicke.Naming citation (20050523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Billharper is today
Seen from above the solar system on 2026-10-14: Billharper is 3.07 au from the Sun and 3.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15849 |
| Provisional designation | 1995 YM10 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.49 |
| Orbital period | 5.09 years |
| Semi-major axis | 2.96 au |
| Perihelion – aphelion | 2.76 – 3.16 au |
| Eccentricity | 0.0673 |
| Inclination | 2.38° |
| Closest distance between its orbit and Earth's (MOID) | 1.74 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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