(2478) Tokai Main-belt Asteroid
Discovered on 4 May 1981 by T. Furuta at Tokai.
Where Tokai is today
Seen from above the solar system on 2026-10-14: Tokai is 2.08 au from the Sun and 2.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2478 |
| Provisional designation | 1981 JC |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.24 km (#5,587 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.252 |
| Rotation period | 25.9 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.23 |
| Orbital period | 3.32 years |
| Semi-major axis | 2.23 au |
| Perihelion – aphelion | 2.07 – 2.38 au |
| Eccentricity | 0.0679 |
| Inclination | 4.14° |
| Closest distance between its orbit and Earth's (MOID) | 1.09 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.