(223633) Rosnyaine Mars-crossing Asteroid
Discovered on 17 May 2004 by B. Christophe at Saint-Sulpice.
J.-H. Rosny-Aîiné is the pseudonym of Joseph Henri Honore Boex (1856-1940), a French author of Belgian origin considered one of the founders of modern science fiction. La Guerre du Feu was written in 1911 with his younger brother.Naming citation (20101128/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rosnyaine is today
Seen from above the solar system on 2026-10-14: Rosnyaine is 2.30 au from the Sun and 2.07 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 223633 |
| Provisional designation | 2004 KJ1 |
| Orbit class | Mars-crossing Asteroid |
| Absolute magnitude (H) | 16.06 |
| Orbital period | 4.21 years |
| Semi-major axis | 2.61 au |
| Perihelion – aphelion | 1.57 – 3.64 au |
| Eccentricity | 0.398 |
| Inclination | 6.19° |
| Closest distance between its orbit and Earth's (MOID) | 0.571 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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