(333539) Rayfranco Mars-crossing Asteroid
Discovered on 29 September 2005 by CSS at Catalina.
Ray Franco (b. 1991) is an American Mission Operations Flight Software Engineer for the OSIRIS-REx Asteroid Sample Return Mission. He has also supported other missions such as the Spitzer Space Telescope and 2001 Mars Odyssey.Naming citation (WGSBN Bull. 5, #17, 26), IAU / Minor Planet Center, via NASA/JPL
Where Rayfranco is today
Seen from above the solar system on 2026-10-14: Rayfranco is 1.72 au from the Sun and 1.77 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 333539 |
| Provisional designation | 2005 SU220 |
| Orbit class | Mars-crossing Asteroid |
| Absolute magnitude (H) | 17.4 |
| Orbital period | 3.57 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 1.64 – 3.03 au |
| Eccentricity | 0.298 |
| Inclination | 5.54° |
| Closest distance between its orbit and Earth's (MOID) | 0.642 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ray
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- (31962) Rayharvey
All asteroids named after someone called Ray