| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Hercules | 
| Right ascension | 16h 32m 35.7s [1] | 
| Declination | +5° 31′ 16″ [1] | 
| Apparent magnitude (V) | 5.63 [1] | 
| Characteristics | |
| Spectral type | B9.5III [1] | 
| U−B color index | −0.18 [1] | 
| B−V color index | −0.06 [1] | 
| Other designations | |
| 28 Herculis, BD+05°3223, HD 149121, HIP 81007, HR 6158, SAO 121676 [2] | |
| Database references | |
| SIMBAD | data | 
n Herculis, also known as 28 Herculis, is a double star in the constellation Hercules at a distance of approximately 395 light-years (about 121 parsecs) from the Sun.[ citation needed ] The apparent magnitude of the star is +5.616.[ citation needed ] Once in the constellation Ophiuchus, it was also catalogued as 11 Ophiuchi. [2]