(10047) Davidchapman Main-belt Asteroid
Discovered on 28 August 1986 by H. Debehogne at La Silla.
David Chapman (b. 1953) is a retired physicist who studied ocean acoustics at Canada's Defence Research Establishment Atlantic. He won the Royal Astronomical Society of Canada's Simon Newcomb Award in 1986 and an RASC Service award in 2015. He was editor of the Observer's Handbook (2012–2017) and led the establishment of Kejimkujik Dark Sky Preserve.Naming citation (WGSBN Bull. 1, #10, 5), IAU / Minor Planet Center, via NASA/JPL
Where Davidchapman is today
Seen from above the solar system on 2026-10-14: Davidchapman is 2.32 au from the Sun and 1.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10047 |
| Provisional designation | 1986 QK2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.77 km (#11,067 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.339 |
| Absolute magnitude (H) | 13.83 |
| Orbital period | 3.59 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 2.22 – 2.47 au |
| Eccentricity | 0.0517 |
| Inclination | 14.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.21 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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