(4773) Hayakawa Main-belt Asteroid
Discovered on 17 November 1989 by Endate, K., Watanabe, K. at Kitami.
Where Hayakawa is today
Seen from above the solar system on 2026-10-14: Hayakawa is 2.87 au from the Sun and 2.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4773 |
| Provisional designation | 1989 WF |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.24 km (#8,596 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.378 |
| Rotation period | 3.24 hours |
| Absolute magnitude (H) | 13.12 |
| Orbital period | 4.22 years |
| Semi-major axis | 2.61 au |
| Perihelion – aphelion | 2.31 – 2.91 au |
| Eccentricity | 0.114 |
| Inclination | 5.02° |
| Closest distance between its orbit and Earth's (MOID) | 1.34 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.