(4245) Nairc Main-belt Asteroid
Discovered on 29 October 1981 by Purple Mountain Observatory at Nanking.
Nairc is the name for Nanjing Astronomical Instrument Research Center, Chinese Academy of Sciences, founded in 1958. Nairc has manufactured over 70 different types of professional astronomical instruments.Naming citation (20050523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Nairc is today
Seen from above the solar system on 2026-10-14: Nairc is 2.61 au from the Sun and 3.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4245 |
| Provisional designation | 1981 UC10 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.2 km (#4,982 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0390 |
| Absolute magnitude (H) | 14.09 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.98 – 2.78 au |
| Eccentricity | 0.168 |
| Inclination | 1.94° |
| Closest distance between its orbit and Earth's (MOID) | 0.979 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.