(21149) Kenmitchell Inner Main-belt Asteroid
Discovered on 19 April 1993 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.
Ken Mitchell (b. 1947) has been an enthusiastic geological field assistant for the Australian Geological Survey Organization, Mount Isa Mines, and other exploration groups. He discovered the shatter cones at Lawn Hill, Queensland, and at Amelia Creek in the Davenport Ranges of Northern Territory.Naming citation (WGSBN Bull. 5, #21, 5), IAU / Minor Planet Center, via NASA/JPL
Where Kenmitchell is today
Seen from above the solar system on 2026-10-14: Kenmitchell is 1.93 au from the Sun and 0.993 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21149 |
| Provisional designation | 1993 HY5 |
| Orbit class | Inner Main-belt Asteroid |
| Rotation period | 2.50 hours |
| Absolute magnitude (H) | 15.09 |
| Orbital period | 2.69 years |
| Semi-major axis | 1.93 au |
| Perihelion – aphelion | 1.86 – 2.00 au |
| Eccentricity | 0.0358 |
| Inclination | 23.9° |
| Closest distance between its orbit and Earth's (MOID) | 0.876 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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