(257212) Rozsahegyi Main-belt Asteroid
Discovered on 22 December 2008 by K. Sárneczky at Piszkesteto.
Márton Rózsahegyi (b. 1979) is a Hungarian environmental researcher, science communicator and amateur astronomer. As a project manager at Konkoly Observatory, he played an essential role in installing a large field-of-view camera to the Schmidt telescope at Piszkéstető, which gave a new momentum to the NEO search program.Naming citation (WGSBN Bull. 2, #1, 8), IAU / Minor Planet Center, via NASA/JPL
Where Rozsahegyi is today
Seen from above the solar system on 2026-10-14: Rozsahegyi is 2.69 au from the Sun and 3.28 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 257212 |
| Provisional designation | 2008 YB5 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.23 |
| Orbital period | 4.34 years |
| Semi-major axis | 2.66 au |
| Perihelion – aphelion | 2.61 – 2.71 au |
| Eccentricity | 0.0194 |
| Inclination | 1.14° |
| Closest distance between its orbit and Earth's (MOID) | 1.59 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.