(20552) Moynier Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Frederic Moynier (b. 1978) is a French cosmochemist who is an expert on volatile element abundances in meteorites and returned samples from asteroids and the Moon. His research has shed light on the processes and timing of volatile-element delivery on Earth.Naming citation (WGSBN Bull. 6, #11, 27), IAU / Minor Planet Center, via NASA/JPL
Where Moynier is today
Seen from above the solar system on 2026-10-14: Moynier is 2.81 au from the Sun and 3.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20552 |
| Provisional designation | 1999 RU112 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.92 km (#7,746 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0800 |
| Absolute magnitude (H) | 14.38 |
| Orbital period | 4.07 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.15 – 2.95 au |
| Eccentricity | 0.156 |
| Inclination | 10.5° |
| 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 Frederic
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All asteroids named after someone called Frederic
Also discovered on 9 September 1999
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