(423645) Quenisset Main-belt Asteroid
Discovered on 22 December 2005 by J.-C. Merlin at Nogales.
Ferdinand Jules Quénisset (1872–1951) was a French astronomer who discovered the comets C/1893 N1 and C/1911 S2. He worked as an observer, specializing in astrophotography, at Camille Flammarion's observatory in Juvisy-sur-Orge.Naming citation (WGSBN Bull. 2, #12, 15), IAU / Minor Planet Center, via NASA/JPL
Where Quenisset is today
Seen from above the solar system on 2026-10-14: Quenisset is 2.93 au from the Sun and 2.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 423645 |
| Provisional designation | 2005 YM4 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.68 |
| Orbital period | 4.50 years |
| Semi-major axis | 2.73 au |
| Perihelion – aphelion | 2.36 – 3.09 au |
| Eccentricity | 0.133 |
| Inclination | 6.01° |
| Closest distance between its orbit and Earth's (MOID) | 1.38 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ferdinand
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- (204370) Ferdinandvanek
All asteroids named after someone called Ferdinand