(210533) Seanmisner Main-belt Asteroid
Discovered on 20 March 1999 by Sloan Digital Sky Survey at Apache Point.
Sean Misner (1987-2013) was one of the 19 elite Prescott's Granite Mountain Hotshot firefighters who lost their lives battling a blaze on a ridge in Yarnell, AZ. Crews such as the Hotshots are connected to astronomy through their brave efforts to protect forests and the observatories within them from fire threats.Naming citation (MPC batch dated 2013-10-18), IAU / Minor Planet Center, via NASA/JPL
Where Seanmisner is today
Seen from above the solar system on 2026-10-14: Seanmisner is 2.33 au from the Sun and 3.32 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 210533 |
| Provisional designation | 1999 FE74 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 18.05 |
| Orbital period | 3.41 years |
| Semi-major axis | 2.27 au |
| Perihelion – aphelion | 1.94 – 2.59 au |
| Eccentricity | 0.143 |
| Inclination | 2.39° |
| Closest distance between its orbit and Earth's (MOID) | 0.959 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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