(223278) Brianduncan Main-belt Asteroid
Discovered on 1 April 2003 by M. W. Buie at Kitt Peak.
Brian P. Duncan (b. 1967) is an American engineer managing software development and mission operations for multiple space missions, including for NASA's New Horizons mission.Naming citation (WGSBN Bull. 5, #4, 28), IAU / Minor Planet Center, via NASA/JPL
Where Brianduncan is today
Seen from above the solar system on 2026-10-14: Brianduncan is 2.54 au from the Sun and 1.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 223278 |
| Provisional designation | 2003 GR53 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.23 |
| Orbital period | 4.32 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.51 – 2.79 au |
| Eccentricity | 0.0529 |
| Inclination | 10.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.52 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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