NGC 6638 (H2306)
NGC 6638 (H2306) is a globular cluster located in the constellation of Sagittarius. The Herchel 2500 is a catalog of nebulae, star clusters, and galaxies. Here are the key stats on NGC 6638:
| Herschel: | H2306 |
| NGC/IC: | NGC 6638 |
| Herschel: | H 1. 51 |
| Type: | globular cluster |
| Magnitude: | 9.2 |
| Right Ascension: | 18:30.9 |
| Declination: | -25:30 |
| Constellation: | Sagittarius |
| Size (arc-minutes): | 5 |