(28436) Davesawyer Main-belt Asteroid
Discovered on 7 December 1999 by LONEOS at Anderson Mesa.
David Sawyer (b. 1959) has been the Technical Project Manager at Lowell Observatory since 2017, managing projects such as the Astronomy Discovery Center and the Yale EXPRES (EXtreme PREcision Spectrometer) at the Lowell Discovery Telescope. He earned an MS in Astronomy in 1993 and a BS in Electrical Engineering in 1981.Naming citation (WGSBN Bull. 2, #12, 8), IAU / Minor Planet Center, via NASA/JPL
Where Davesawyer is today
Seen from above the solar system on 2026-10-14: Davesawyer is 2.33 au from the Sun and 2.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28436 |
| Provisional designation | 1999 XJ230 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.18 km (#16,802 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.213 |
| Absolute magnitude (H) | 15.89 |
| Orbital period | 3.29 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 1.98 – 2.44 au |
| Eccentricity | 0.102 |
| Inclination | 4.93° |
| Closest distance between its orbit and Earth's (MOID) | 0.977 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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