(4729) Mikhailmil' Main-belt Asteroid
Discovered on 8 September 1980 by L. V. Zhuravleva at Nauchnyj.
Named in memory of Mikhail Leontʹevich Milʹ (1909–1970), scientist and designer of helicopters with which 60 official world records were set.Naming citation (WGSBN Bull. 6, #10, 6), IAU / Minor Planet Center, via NASA/JPL
Where Mikhailmil' is today
Seen from above the solar system on 2026-10-14: Mikhailmil' is 1.97 au from the Sun and 1.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4729 |
| Provisional designation | 1980 RO2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.99 km (#8,945 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.449 |
| Rotation period | 38.3 hours |
| Absolute magnitude (H) | 12.77 |
| Orbital period | 3.31 years |
| Semi-major axis | 2.22 au |
| Perihelion – aphelion | 1.83 – 2.61 au |
| Eccentricity | 0.174 |
| Inclination | 2.28° |
| Closest distance between its orbit and Earth's (MOID) | 0.836 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Mikhail
- (2205) Glinka
- (2222) Lermontov
- (4920) Gromov
- (5043) Zadornov
- (5931) Zhvanetskij
- (6214) Mikhailgrinev
- (6538) Muraviov
- (7161) Golitsyn
- (7268) Chigorin
- (7322) Lavrentina
- (7370) Krasnogolovets
- (10264) Marov
All asteroids named after someone called Mikhail