(1802) Zhang Heng
1964 TW1. Discovered 1964 Oct. 9 at the Purple Mountain Observatory at Nanking.
Named for Zhang Heng (78–139), a prominent scientist of the eastern Han dynasty who devised and constructed armillary spheres and seismographs. He also invented a celestial sphere driven by water power that is in many respects the forerunner of the modern planetarium. (M 4419)
Zhang Heng (or Chang Heng) is also honored by a lunar crater.