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]

Rightascension1^h 43^m 23.76^s[1]

Declination55° 50^m 24^s[1]

Distance6308 ly (1934 pc^[1])

Estimatedage~1 Gyr^[1]

Quick facts Observation data (J2000 epoch), Right ascension ...

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

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