(4509) Gorbatskij Main-belt Asteroid
Discovered on 23 September 1917 by S. Beljavskij at Simeis.
Vitaly Gerasimovich Gorbatskij (b. 1920), professor at St. Petersburg University, is well known for his works in the field of cosmic gas dynamics. He put forward the mechanism of disk accretion, interpreted the emission spectra of variable stars and proposed an explanation for “hot spots” in systems of binary stars.Naming citation (20000523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Gorbatskij is today
Seen from above the solar system on 2026-10-14: Gorbatskij is 2.92 au from the Sun and 3.71 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4509 |
| Provisional designation | A917 SG |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.6 km (#4,283 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.159 |
| Rotation period | 6.01 hours |
| Absolute magnitude (H) | 11.98 |
| Orbital period | 4.59 years |
| Semi-major axis | 2.76 au |
| Perihelion – aphelion | 2.01 – 3.51 au |
| Eccentricity | 0.272 |
| Inclination | 10.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Vitaly
All asteroids named after someone called Vitaly