(21454) Chernoby Main-belt Asteroid
Discovered on 20 April 1998 by LINEAR at Socorro.
Grant Fabian Chernoby (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for his behavioral and social sciences team project. He attends the Lake Brantley High School, Altamonte Springs, Florida, U.S.A.Naming citation (20060711/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Chernoby is today
Seen from above the solar system on 2026-10-14: Chernoby is 3.34 au from the Sun and 4.30 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21454 |
| Provisional designation | 1998 HE40 |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.2 km (#3,656 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0700 |
| Absolute magnitude (H) | 13.27 |
| Orbital period | 5.64 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.92 – 3.42 au |
| Eccentricity | 0.0785 |
| Inclination | 9.87° |
| Closest distance between its orbit and Earth's (MOID) | 1.95 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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