(211021) Johnpercin Main-belt Asteroid
Discovered on 18 December 2001 by Sloan Digital Sky Survey at Apache Point.
John Percin Jr. (1989-2013) 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 Johnpercin is today
Seen from above the solar system on 2026-10-14: Johnpercin is 2.34 au from the Sun and 3.13 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 211021 |
| Provisional designation | 2001 YC159 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.39 |
| Orbital period | 3.36 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 2.13 – 2.35 au |
| Eccentricity | 0.0493 |
| Inclination | 6.85° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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