(13857) Stafford Main-belt Asteroid
Discovered on 4 December 1999 by CSS at Catalina.
Gregory Stafford (b. 1963) is an electronics engineer at the University of Arizona's Steward Observatory. He has been an important force in the development of control systems for a new generation of small telescopes. He has also been active in outreach activities to youth programs.Naming citation (20120831/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Stafford as a baby name🐶 Stafford as a dog name
Where Stafford is today
Seen from above the solar system on 2026-10-14: Stafford is 3.05 au from the Sun and 3.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13857 |
| Provisional designation | 1999 XE109 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.83 km (#13,156 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.332 |
| Absolute magnitude (H) | 14.44 |
| Orbital period | 4.27 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.21 – 3.05 au |
| Eccentricity | 0.159 |
| Inclination | 4.67° |
| Closest distance between its orbit and Earth's (MOID) | 1.20 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Gregory
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All asteroids named after someone called Gregory
Also discovered on 4 December 1999
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