NGC_657 Knowpia

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

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]

References edit

^ ^a ^b ^c ^d Kharchenko, N. V.; Piskunov, A. E.; Schilbach, E.; Röser, S.; Scholz, R.-D. (2013). "Global survey of star clusters in the Milky Way". Astronomy & Astrophysics. 558: A53. arXiv:1308.5822. Bibcode:2013A&A...558A..53K. doi:10.1051/0004-6361/201322302.
^ "NGC 657". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-23.
^ Ford, Dominic. "The open cluster NGC 657 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-04-05.
^ "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-04-05.

NGC 657
NGC 657 Credit: Sloan Digital Sky Survey
Observation data (J2000 epoch)
Right ascension	1^h 43^m 23.76^s^[1]
Declination	55° 50^m 24^s^[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