(268115) Williamalbrecht Main-belt Asteroid
Discovered on 7 October 2004 by Cooney Jr., W. R., Gross, J. at Sonoita.
William B. Albrecht (1917-2009) was an active amateur astronomer who made contributions to the study of variable stars, lunar occultations, solar astronomy and aurorae. Bill designed and fabricated instrumentation for amateur and professional observatories.Naming citation (MPC batch dated 2014-01-16), IAU / Minor Planet Center, via NASA/JPL
Where Williamalbrecht is today
Seen from above the solar system on 2026-10-14: Williamalbrecht is 2.49 au from the Sun and 1.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 268115 |
| Provisional designation | 2004 TK9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.47 km (#16,314 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.240 |
| Absolute magnitude (H) | 15.45 |
| Orbital period | 4.29 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.27 – 3.01 au |
| Eccentricity | 0.140 |
| Inclination | 30.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.28 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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