Chang Heng (crater)

Chang Heng

Oblique Apollo 16 image (facing northwest)
Coordinates	19°00′N 112°12′E / 19.0°N 112.2°E / 19.0; 112.2Coordinates: 19°00′N 112°12′E / 19.0°N 112.2°E / 19.0; 112.2
Diameter	43 km
Depth	Unknown
Colongitude	248° at sunrise
Eponym	Zhang Heng

Chang Heng is a lunar crater that is located on the Moon's far side. It lies less than one crater diameter to the northeast of the walled plain Fleming. Other crater located to the east is Olcott. The rim of this crater is somewhat eroded, with a pair of small craters along the northern rim and tiny craters along the south and east edges. The interior floor contains a small, concentric crater that is about one third the diameter of Chang Heng.

By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Chang Heng.