(20578) Parisot Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Jérôme Parisot (b. 1970) is a French research engineer specializing in assembly, integration and tests activities for space instruments for over 30 years. He started working on OMEGA/Mars Express, and then on instruments on multiple missions, including VIRTIS on Rosetta.Naming citation (WGSBN Bull. 6, #11, 28), IAU / Minor Planet Center, via NASA/JPL
Where Parisot is today
Seen from above the solar system on 2026-10-14: Parisot is 3.07 au from the Sun and 2.19 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20578 |
| Provisional designation | 1999 RH149 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.14 km (#10,355 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.202 |
| Rotation period | 1.13 hours |
| Absolute magnitude (H) | 14.14 |
| Orbital period | 5.23 years |
| Semi-major axis | 3.01 au |
| Perihelion – aphelion | 2.94 – 3.09 au |
| Eccentricity | 0.0257 |
| Inclination | 10.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.94 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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