(25481) Willjaysun Main-belt Asteroid
Discovered on 7 December 1999 by LINEAR at Socorro.
William Jayang Sun (b. 1991) is a finalist in the 2009 Intel Science Talent Search (STS), a science competition for high school seniors, for his biochemistry project. He attends the Parkway Central High School, Chesterfield, Missouri.Naming citation (20090311/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Willjaysun is today
Seen from above the solar system on 2026-10-14: Willjaysun is 2.11 au from the Sun and 2.09 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25481 |
| Provisional designation | 1999 XU68 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.13 |
| Orbital period | 3.47 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.87 – 2.71 au |
| Eccentricity | 0.183 |
| Inclination | 5.53° |
| Closest distance between its orbit and Earth's (MOID) | 0.884 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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