(31502) Hellerstein Main-belt Asteroid
Discovered on 12 February 1999 by LINEAR at Socorro.
Joshua Kopel Hellerstein (b. 1996) was awarded first place in the 2014 Intel International Science and Engineering Fair for his electrical and mechanical engineering project. He attends the Suncoast Community High School, Riviera Beach, Florida, U.S.A.Naming citation (MPC batch dated 2015-06-02), IAU / Minor Planet Center, via NASA/JPL
Where Hellerstein is today
Seen from above the solar system on 2026-10-14: Hellerstein is 2.16 au from the Sun and 2.94 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31502 |
| Provisional designation | 1999 CQ68 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.01 km (#15,202 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.135 |
| Absolute magnitude (H) | 15.48 |
| Orbital period | 3.84 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 2.06 – 2.85 au |
| Eccentricity | 0.161 |
| Inclination | 2.39° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Joshua
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