Purple Mountain Observatory , also known as Zijinshan Astronomical Observatory, is an astronomical observatory located on the Purple Mountain in Nanjing, China.
The observatory discovered the periodic comets 60P/Tsuchinshan and 62P/Tsuchinshan, and also the non-periodic C/1977 V1 (Tsuchinshan), also known as Comet 1977 X.
Scientific - Astronomy
Links: en.wikipedia.org
By: kjfitz