(117240) Zhytomyr Main-belt Asteroid
Discovered on 19 September 2004 by Andrushivka at Andrushivka.
Engineer-in-chief of the first manned flight by Yurij Gagarin in 1961, Sergej Korolov (1907-1966) was well known for his construction of space rockets. Zhytomyr was his place of birth. This naming is on the occasion of the hundredth anniversary of his birth in early 2007.Naming citation (20060613/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Zhytomyr is today
Seen from above the solar system on 2026-10-14: Zhytomyr is 2.50 au from the Sun and 1.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 117240 |
| Provisional designation | 2004 SX19 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.88 km (#13,045 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0510 |
| Absolute magnitude (H) | 16.11 |
| Orbital period | 4.31 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.14 – 3.16 au |
| Eccentricity | 0.193 |
| Inclination | 8.89° |
| Closest distance between its orbit and Earth's (MOID) | 1.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.