(2778) Tangshan Main-belt Asteroid
Discovered on 14 December 1979 by Purple Mountain Observatory at Nanking.
Where Tangshan is today
Seen from above the solar system on 2026-10-14: Tangshan is 2.34 au from the Sun and 2.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2778 |
| Provisional designation | 1979 XP |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.5 km (#3,888 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0440 |
| Rotation period | 3.46 hours |
| Spectral type | Cb |
| Absolute magnitude (H) | 13.45 |
| Orbital period | 3.45 years |
| Semi-major axis | 2.28 au |
| Perihelion – aphelion | 2.00 – 2.56 au |
| Eccentricity | 0.122 |
| Inclination | 4.62° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 14 December 1979
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
← (2777) Shukshin · (2779) Mary →