Another paper featuring AAVSO observations in the analysis.
Abstract: We examine the long-term light curve, optical spectrum, spectral energy distribution, and Galactic location of V1117 Her in order to establish its nature. V1117 Her is most probably a young intermediate-mass star whose cyclic brightness dimmings are caused by changing circumstellar dust structures.
Authors: M. Kun, M. Rácz, L. Szabados