NGC 657

NGC 657 is an open cluster containing very few stars or a group of stars located in the constellation Cassiopeia. It was discovered by British astronomer John Herschel in 1831.^[3][4]

NGC 657
NGC 657 Credit: Sloan Digital Sky Survey
Observation data (J2000 epoch)
Right ascension	1h 43m 23.76s[1]
Declination	55° 50m 24s[1]
Distance	6308 ly (1934 pc[1])
Physical characteristics
Estimated age	~1 Gyr[1]
Other designations	C 0140+556, MWSC 135[2]
Associations
Constellation	Cassiopeia
See also: Open cluster, List of open clusters

See also

• List of NGC objects (1–1000)