(199947) Qaidam Main-belt Asteroid
Discovered on 16 April 2007 by PMO NEO Survey Program at XuYi.
Qaidam, meaning “salt marshes” in Mongolian, located in the north of Qinghai-Tibet Plateau, is one of the China's four big basins and the main region of Haixi Mongolian-Tibetan Autonomous Prefecture. The Qaidam basin is the largest salt reserve in the world, and is also rich in oil, coal and various metalic minerals.Naming citation (MPC batch dated 2013-11-17), IAU / Minor Planet Center, via NASA/JPL
Where Qaidam is today
Seen from above the solar system on 2026-10-14: Qaidam is 3.29 au from the Sun and 3.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 199947 |
| Provisional designation | 2007 HR7 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.53 |
| Orbital period | 4.28 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 1.87 – 3.40 au |
| Eccentricity | 0.290 |
| Inclination | 16.3° |
| Closest distance between its orbit and Earth's (MOID) | 0.913 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.