(4477) Kelley Main-belt Asteroid
Discovered on 28 September 1983 by Bulgarian National Observatory at Smolyan.
Michael Shawn Kelley (b. 1958) is a program officer at the Planetary Science Division, NASA Headquarters, Washington, D.C. With expertise in planetary geology, he specializes in constraining the surface composition of asteroids using spectroscopy, including members of the Flora family such as (4477).Naming citation (MPC batch dated 2014-07-12), IAU / Minor Planet Center, via NASA/JPL
👶 Kelley as a baby name🐶 Kelley as a dog name
Where Kelley is today
Seen from above the solar system on 2026-10-14: Kelley is 1.87 au from the Sun and 0.949 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4477 |
| Provisional designation | 1983 SB |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.76 km (#11,087 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.373 |
| Rotation period | 4.38 hours |
| Absolute magnitude (H) | 13.58 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 1.86 – 2.58 au |
| Eccentricity | 0.162 |
| Inclination | 2.94° |
| Closest distance between its orbit and Earth's (MOID) | 0.856 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Michael
- (3192) A'Hearn
- (4599) Rowan
- (5373) Michaelkurtz
- (5554) Keesey
- (5569) Colby
- (6406) Mikejura
- (6569) Ondaatje
- (7738) Heyman
- (7936) Mikemagee
- (8032) Michaeladams
- (8129) Michaelbusch
- (8379) Straczynski
All asteroids named after someone called Michael