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)
Constellation	Cassiopeia
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]

See also

• List of NGC objects (1–1000)

References

1. 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. Bibcode:2013A&A...558A..53K. doi:10.1051/0004-6361/201322302.
2. "NGC 657". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-05-23.
3. Ford, Dominic. "The open cluster NGC 657 - In-The-Sky.org". in-the-sky.org. Retrieved 2020-04-05.
4. "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2020-04-05.

External links

• Media related to NGC 657 at Wikimedia Commons