(21403) Haken Main-belt Asteroid
Discovered on 20 March 1998 by LINEAR at Socorro.
Ian Robert Haken (b. 1986) is a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors, for his chemistry project. He attends the Texas Academy of Mathematics & Science, Denton, Texas.Naming citation (20050224/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Haken is today
Seen from above the solar system on 2026-10-14: Haken is 2.56 au from the Sun and 1.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21403 |
| Provisional designation | 1998 FN58 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.45 km (#9,800 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0590 |
| Absolute magnitude (H) | 15.31 |
| Orbital period | 3.79 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 2.07 – 2.80 au |
| Eccentricity | 0.150 |
| Inclination | 3.35° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ian
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All asteroids named after someone called Ian
Also discovered on 20 March 1998
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