NGC 6661
NGC 6661 is a duplicate located in the constellation of Hercules. The NGC is a catalog of 7,840 nebulae, star clusters, and galaxies. Here are the key stats on NGC 6661:
| NGC: | NGC 6661 |
| Type: | duplicate |
| Dupe x-reference: | NGC 6660 |
| Constellation: | Hercules |
| Right Ascension: | 18:34:36.67 |
| Declination: | 22:54:34.80 |
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS