(10177) Ellison Main-belt Asteroid
Discovered on 10 February 1996 by Spacewatch at Kitt Peak.
Harlan Ellison (b. 1934) is science-fiction author whose works include I Have No Mouth and I Must Scream and Shatterday. He has served as consultant on several television series, particularly Babylon 5. His original screenplay for the Star Trek episode “The City on the Edge of Forever” won one of his 11 Hugo Awards.Naming citation (WGSBN Bull. 3, #13, 8), IAU / Minor Planet Center, via NASA/JPL
Where Ellison is today
Seen from above the solar system on 2026-10-14: Ellison is 2.47 au from the Sun and 2.34 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10177 |
| Provisional designation | 1996 CK9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.89 km (#10,825 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.154 |
| Rotation period | 7.23 hours |
| Absolute magnitude (H) | 13.86 |
| Orbital period | 3.50 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 1.95 – 2.67 au |
| Eccentricity | 0.156 |
| Inclination | 6.59° |
| Closest distance between its orbit and Earth's (MOID) | 0.935 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Harlan
All asteroids named after someone called Harlan