(21467) Rosenstein Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Peter Rosenstein mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. He teaches at the Plainedge High School, North Massapequa, New York.Naming citation (20050224/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rosenstein is today
Seen from above the solar system on 2026-10-14: Rosenstein is 2.53 au from the Sun and 2.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21467 |
| Provisional designation | 1998 HX93 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.12 km (#16,891 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.472 |
| Absolute magnitude (H) | 15.16 |
| Orbital period | 3.73 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.25 – 2.55 au |
| Eccentricity | 0.0630 |
| Inclination | 7.29° |
| Closest distance between its orbit and Earth's (MOID) | 1.24 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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