(13301) Hofsteen Main-belt Asteroid
Discovered on 14 September 1998 by LINEAR at Socorro.
Alex Hofsteen mentored a finalist in the 2019 Broadcom MASTERS, a math and science competition for middle-school students. He teaches at the International School of Monterey, Seaside, California.Naming citation (WGSBN Bull. 3, #2, 10), IAU / Minor Planet Center, via NASA/JPL
Where Hofsteen is today
Seen from above the solar system on 2026-10-14: Hofsteen is 2.72 au from the Sun and 3.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13301 |
| Provisional designation | 1998 RP19 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.77 km (#13,271 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.236 |
| Absolute magnitude (H) | 14.53 |
| Orbital period | 4.41 years |
| Semi-major axis | 2.69 au |
| Perihelion – aphelion | 2.45 – 2.93 au |
| Eccentricity | 0.0880 |
| Inclination | 1.02° |
| 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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All asteroids named after someone called Alex
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