(4073) Ruianzhongxue Main-belt Asteroid
Discovered on 23 October 1981 by Purple Mountain Observatory at Nanking.
Ruianzhongxue (Ruian Middle School) in Zhejiang province is celebrating its 110th anniversary. Founded by progressive educator Sun Yirang (1848-1908), the school specializes in mathematics. Many prominent scholars were trained there.Naming citation (20051215/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ruianzhongxue is today
Seen from above the solar system on 2026-10-14: Ruianzhongxue is 2.72 au from the Sun and 1.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4073 |
| Provisional designation | 1981 UE10 |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.6 km (#3,860 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.122 |
| Rotation period | 7.74 hours |
| Absolute magnitude (H) | 12.31 |
| Orbital period | 5.66 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 2.62 – 3.73 au |
| Eccentricity | 0.174 |
| Inclination | 2.07° |
| Closest distance between its orbit and Earth's (MOID) | 1.61 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 23 October 1981
More named asteroids discovered by Purple Mountain Observatory
- (1125) China
- (1802) Zhang Heng
- (1888) Zu Chong-Zhi
- (1972) Yi Xing
- (2012) Guo Shou-Jing
- (2027) Shen Guo
- (2045) Peking
- (2077) Kiangsu
- (2078) Nanking
- (2085) Henan
- (2162) Anhui
- (2169) Taiwan
← (4072) Yayoi · (4074) Sharkov →