(149573) Mamorudoi Main-belt Asteroid
Discovered on 21 December 2003 by Sloan Digital Sky Survey at Apache Point.
Mamoru Doi (b. 1964) is a Japanese astronomer and a contributor to the Sloan Digital Sky Survey, best known for characterizing the SDSS imager.Naming citation (20120406/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Mamorudoi is today
Seen from above the solar system on 2026-10-14: Mamorudoi is 2.15 au from the Sun and 3.07 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 149573 |
| Provisional designation | 2003 YK180 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.1 |
| Orbital period | 3.20 years |
| Semi-major axis | 2.17 au |
| Perihelion – aphelion | 2.11 – 2.23 au |
| Eccentricity | 0.0262 |
| Inclination | 3.04° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Mamoru
All asteroids named after someone called Mamoru