(21541) Friskop Main-belt Asteroid
Discovered on 17 August 1998 by LINEAR at Socorro.
Andrew John Friskop (b. 1987) was awarded first place and Best in Category in the 2005 Intel International Science and Engineering Fair for his botany project. He attends the Hankinson High School, Hankinson, North Dakota, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Friskop is today
Seen from above the solar system on 2026-10-14: Friskop is 3.07 au from the Sun and 3.78 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21541 |
| Provisional designation | 1998 QP16 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.72 km (#9,359 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.163 |
| Absolute magnitude (H) | 14.16 |
| Orbital period | 5.11 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.85 – 3.09 au |
| Eccentricity | 0.0408 |
| Inclination | 9.53° |
| Closest distance between its orbit and Earth's (MOID) | 1.84 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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