AC Her fading Secondary minimum? YYYYMMDD(UT) mag observer 20000923.949 74 (M. Reszelski) 20000924.462 71 (Y. Atobe) 20000926.800 72 (L. Kiss) 20000926.800 74 (M. Reszelski) 20000927.800 72 (L. Kiss) 20000929.800 72 (L. Kiss) 20001004.456 75 (K. Hirosawa) 20001011.474 80 (Y. Atobe)