(2387) Xi'an Main-belt Asteroid
Discovered on 17 March 1975 by Purple Mountain Observatory at Nanking.
Where Xi'an is today
Seen from above the solar system on 2026-10-14: Xi'an is 2.79 au from the Sun and 2.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2387 |
| Provisional designation | 1975 FX |
| Orbit class | Main-belt Asteroid |
| Diameter | 20.5 km (#2,138 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.139 |
| Rotation period | 4.30 hours |
| Absolute magnitude (H) | 11.55 |
| Orbital period | 5.25 years |
| Semi-major axis | 3.02 au |
| Perihelion – aphelion | 2.79 – 3.25 au |
| Eccentricity | 0.0758 |
| Inclination | 10.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.82 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 17 March 1975
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
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