NGC  637 (H153)
NGC 637 (H153) is a open cluster located in the constellation of Cassiopeia. The Herchel 2500 is a catalog of nebulae, star clusters, and galaxies. Here are the key stats on NGC 637:
| Herschel: | H153 | 
| NGC/IC: | NGC 637 | 
| Herschel: | H 7. 49 | 
| Type: | open cluster | 
| Magnitude: | 8.2 | 
| Right Ascension: | 01:42.9 | 
| Declination: | +64:00 | 
| Constellation: | Cassiopeia | 
| Size (arc-minutes): | 4 |