The long-period variable S Herculis is of interest, apart from the nature of its light curve, inasmuch as the dates of maximum are seemingly irregular, and also appear to be affected by some periodic inequality. Read more
Maxima of long period variable S Herculis on the 10th July, 2011. Magnitude: 7.6-12.6 V Period: 307.28 days Type: Mira Position (2000): RA 16 51 53.92 | Dec +14 56 30.6