(8251) Isogai Mars-crossing Asteroid
Discovered on 8 November 1980 by T. Furuta at Tokai.
Rensuke Isogai (b. 1941), a high-school classmate of the discoverer, is an electrical engineer and amateur astronomer. He influenced the discoverer in astronomy, who began to observe stars with a telescope borrowed from him.Naming citation (20001013/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Isogai is today
Seen from above the solar system on 2026-10-14: Isogai is 2.80 au from the Sun and 3.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8251 |
| Provisional designation | 1980 VA |
| Orbit class | Mars-crossing Asteroid |
| Diameter | 4.34 km (#11,972 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0790 |
| Absolute magnitude (H) | 15.44 |
| Orbital period | 3.38 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.66 – 2.85 au |
| Eccentricity | 0.264 |
| Inclination | 3.21° |
| Closest distance between its orbit and Earth's (MOID) | 0.668 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.