(74370) Kolarjan Main-belt Asteroid
Discovered on 9 December 1998 by Tichy, M., Ticha, J. at Klet.
Jan Kolář (b. 1944) started his professional career in satellite remote sensing in 1975. Since the mid-90s he actively participated in the building of the Czech-ESA relations and significantly contributed to the creation of the Czech Space Office.Naming citation (MPC batch dated 2014-08-10), IAU / Minor Planet Center, via NASA/JPL
Where Kolarjan is today
Seen from above the solar system on 2026-10-14: Kolarjan is 2.61 au from the Sun and 1.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 74370 |
| Provisional designation | 1998 XJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.42 km (#8,361 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0360 |
| Absolute magnitude (H) | 15.49 |
| Orbital period | 4.66 years |
| Semi-major axis | 2.79 au |
| Perihelion – aphelion | 2.10 – 3.47 au |
| Eccentricity | 0.245 |
| Inclination | 10.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.14 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Jan
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- (3791) Marci
- (3847) Sindel
- (6266) Letzel
- (6834) Hunfeld
- (7218) Skacel
- (7221) Sallaba
- (7701) Zrzavy
- (7849) Janjosefric
- (8149) Ruff
- (9239) van Riebeeck
- (9259) Janvanparadijs
All asteroids named after someone called Jan