NGC 657 | |
---|---|
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 |
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]