(121656) Jamesrogers Main-belt Asteroid
Discovered on 4 December 1999 by CSS at Catalina.
James E. Rogers (b. 1964) is the Planning and Scheduling Lead for the OSIRIS-REx Asteroid Sample Return Mission. He also was the Planning and Scheduling Lead for the TDRS K/L and STEREO Missions, and a Scheduling Team Member on several Hubble Servicing Missions.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Jamesrogers is today
Seen from above the solar system on 2026-10-14: Jamesrogers is 2.57 au from the Sun and 2.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 121656 |
| Provisional designation | 1999 XM5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.07 km (#5,705 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0560 |
| Absolute magnitude (H) | 14.08 |
| Orbital period | 5.29 years |
| Semi-major axis | 3.04 au |
| Perihelion – aphelion | 2.49 – 3.59 au |
| Eccentricity | 0.181 |
| Inclination | 16.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.55 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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