(4820) Fay Main-belt Asteroid
Discovered on 15 September 1985 by C. S. Shoemaker at Palomar.
👶 Fay as a baby name🐶 Fay as a dog name
Where Fay is today
Seen from above the solar system on 2026-10-14: Fay is 3.82 au from the Sun and 4.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4820 |
| Provisional designation | 1985 RZ |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.60 km (#6,068 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.455 |
| Rotation period | 3.73 hours |
| Absolute magnitude (H) | 12.09 |
| Orbital period | 4.83 years |
| Semi-major axis | 2.86 au |
| Perihelion – aphelion | 1.85 – 3.86 au |
| Eccentricity | 0.353 |
| Inclination | 12.4° |
| Closest distance between its orbit and Earth's (MOID) | 0.909 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.