(70207) Davidunlap Main-belt Asteroid
Discovered on 4 September 1999 by Collins, M., White, M. at Anza.
David Alexander Dunlap (1863-1924), born in Pembroke, Ontario, a mining magnate, philanthropist and amateur astronomer, was the namesake of the David Dunlap Observatory, location of Canada's largest optical telescope, and where the first black-hole candidate Cygnus X-1 was discovered and confirmed.Naming citation (20090409/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Davidunlap is today
Seen from above the solar system on 2026-10-14: Davidunlap is 2.30 au from the Sun and 2.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 70207 |
| Provisional designation | 1999 RP33 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.38 km (#16,485 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.260 |
| Absolute magnitude (H) | 15.29 |
| Orbital period | 3.70 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.16 – 2.62 au |
| Eccentricity | 0.0955 |
| Inclination | 7.06° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called David
- (2410) Morrison
- (4262) DeVorkin
- (4536) Drewpinsky
- (5270) Kakabadze
- (5332) Davidaguilar
- (5826) Bradstreet
- (5845) Davidbrewster
- (5920) Davidbell
- (5965) Meisel
- (6033) Southwood
- (6111) Davemckay
- (6435) Daveross
All asteroids named after someone called David
Also discovered on 4 September 1999
- (12574) LONEOS
- (12575) Palmaria
- (20497) Marenka
- (20500) Avner
- (20607) Vernazza
- (21664) Konradzuse
- (21684) Alinafiocca
- (23990) Springsteen
- (40410) Prihoda
- (40457) Williamkuhn
- (59970) Morate
- (66479) Healy