(6906) Johnmills Main-belt Asteroid
Discovered on 19 November 1990 by R. H. McNaught at Siding Spring.
John Mills (1806-1899), twine manufacturer and amateur astronomer, left funds for the creation of Britain's first public observatory. The Mills Observatory in his home town of Dundee was eventually built in 1935.Naming citation (20070106/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Johnmills is today
Seen from above the solar system on 2026-10-14: Johnmills is 2.32 au from the Sun and 1.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6906 |
| Provisional designation | 1990 WC |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.2 km (#4,457 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0890 |
| Spectral type | C |
| Absolute magnitude (H) | 13.28 |
| Orbital period | 4.54 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.00 – 3.48 au |
| Eccentricity | 0.270 |
| Inclination | 10.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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