(12757) Yangtze Main-belt Asteroid
Discovered on 14 September 1993 by Debehogne, H., Elst, E. W. at La Silla.
The Yangtze in China is the third longest river in the world. With its source at the base of several glaciers in the eastern part of the Qinghai-Tibet Plateau, the river has great importance for understanding the cultural origins of South China. Humans have lived in the region for at least 27000 years.Naming citation (MPC batch dated 2015-01-05), IAU / Minor Planet Center, via NASA/JPL
Where Yangtze is today
Seen from above the solar system on 2026-10-14: Yangtze is 3.00 au from the Sun and 3.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12757 |
| Provisional designation | 1993 RY11 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.45 km (#9,799 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.260 |
| Absolute magnitude (H) | 13.59 |
| Orbital period | 4.97 years |
| Semi-major axis | 2.91 au |
| Perihelion – aphelion | 2.67 – 3.15 au |
| Eccentricity | 0.0828 |
| Inclination | 1.06° |
| Closest distance between its orbit and Earth's (MOID) | 1.66 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.