(129173) Mattgoman Main-belt Asteroid
Discovered on 13 May 2005 by CSS at Catalina.
Matt Goman (b. 1979) is the Lockheed Martin Operations Ground System Development Lead for the OSIRIS-REx Asteroid Sample Return Mission telemetry systems and tools. He was also Ground System Development Lead and tools engineer for the MAVEN and InSight missions.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Mattgoman is today
Seen from above the solar system on 2026-10-14: Mattgoman is 2.70 au from the Sun and 3.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 129173 |
| Provisional designation | 2005 JG139 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.47 km (#16,319 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.264 |
| Absolute magnitude (H) | 15.3 |
| Orbital period | 5.48 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.68 – 3.54 au |
| Eccentricity | 0.139 |
| Inclination | 17.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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