(2193) Jackson Main-belt Asteroid
Discovered on 18 May 1926 by H. E. Wood at Johannesburg.
Named in honor of Cyril Jackson, whose 67 discoveries of numbered minor planets constitute a record for the southern hemisphere. After working at the former Union Observatory in Johannesburg he was subsequently associated with the Yale-Columbia Southern Station at its successive locations. Name proposed by C. M. Bardwell and B. G. Marsden.Naming citation (MPC 5451), IAU / Minor Planet Center, via NASA/JPL
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Where Jackson is today
Seen from above the solar system on 2026-10-14: Jackson is 3.18 au from the Sun and 2.20 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2193 |
| Provisional designation | 1926 KB |
| Orbit class | Main-belt Asteroid |
| Diameter | 58.3 km (#614 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0360 |
| Rotation period | 4.75 hours |
| Absolute magnitude (H) | 10.79 |
| Orbital period | 5.47 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.87 – 3.34 au |
| Eccentricity | 0.0747 |
| Inclination | 11.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.87 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Cyril
All asteroids named after someone called Cyril