(40328) Dow Main-belt Asteroid
Discovered on 20 June 1999 by D. Healy at Junk Bond.
The discoverer's mother, Marjorie Dow Healy (1906-2000), sparked his interest in astronomy by teaching him the constellations when he was a child. She was privileged to view Comet 1P/Halley at both the 1910 and 1986 apparitions.Naming citation (20031110/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dow is today
Seen from above the solar system on 2026-10-14: Dow is 2.04 au from the Sun and 1.05 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 40328 |
| Provisional designation | 1999 MK |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.54 |
| Orbital period | 3.33 years |
| Semi-major axis | 2.23 au |
| Perihelion – aphelion | 1.85 – 2.61 au |
| Eccentricity | 0.169 |
| Inclination | 6.62° |
| Closest distance between its orbit and Earth's (MOID) | 0.851 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marjorie
All asteroids named after someone called Marjorie