(25522) Roisen Main-belt Asteroid
Discovered on 7 December 1999 by LINEAR at Socorro.
Patrick Roisen mentored a finalist in the 2009 Intel Science Talent Search (STS), a science competition for high school seniors. He teaches at the Menlo-Atherton High School, Atherton, California.Naming citation (20090311/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Roisen is today
Seen from above the solar system on 2026-10-14: Roisen is 2.61 au from the Sun and 3.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25522 |
| Provisional designation | 1999 XK103 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.82 |
| Orbital period | 4.36 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.45 – 2.89 au |
| Eccentricity | 0.0834 |
| Inclination | 4.75° |
| Closest distance between its orbit and Earth's (MOID) | 1.46 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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