(612916) Stirlingcolgate Main-belt Asteroid
Discovered on 7 January 2005 by M. Ory at Nogales.
Stirling Colgate (1925–2013) was an American nuclear physicist. First interested in X-ray and γ-ray emissions from hydrogen-bomb explosions, he later studied supernovae that produced similar high-energy radiation.Naming citation (WGSBN Bull. 3, #1, 18), IAU / Minor Planet Center, via NASA/JPL
Where Stirlingcolgate is today
Seen from above the solar system on 2026-10-14: Stirlingcolgate is 2.13 au from the Sun and 2.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 612916 |
| Provisional designation | 2005 AR22 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 18.13 |
| Orbital period | 4.33 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 1.98 – 3.33 au |
| Eccentricity | 0.255 |
| Inclination | 5.83° |
| Closest distance between its orbit and Earth's (MOID) | 0.996 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.