NGC 6406
 
NGC 6406 is a double star 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 6406:
| NGC: | NGC 6406 | 
| Type: | double star | 
| Constellation: | Hercules | 
| Right Ascension: | 17:38:19.05 | 
| Declination: | 18:49:59.00 | 
Right Ascension (RA) units = HH:MM:SS.SS
Declination (Dec) units = DD:MM:SS.SS