View here: Details for V1117 Her observations requested
Abstract: AAVSO Young Stellar Object (YSO) Section leader Michael Poxon (Great Plumstead, Norfolk, UK) requests coverage of the YSO V1117 Her. He writes: “The peculiar YSO V1117 Herculis has begun another fade. Recent observations by Gary Poyner and myself show the star fading to magnitude 14. This may become a deep fade or possibly a shallower ‘precursor’ fade as this object sometimes exhibits. Observations, both visual and multiwavelength, are encouraged, since the behaviour of this star’s historical fading episodes may indicate rapidly-changing evolution of protoplanetary clumps in the circumstellar disc. V1117 Her often seems to have these precursory fades before the main event, but not so often, if at all, afterwards - suggesting maybe asymmetry in the circumstellar clumps. So it may be worth watching for these too.”
Justification: Observations, both visual and multiwavelength, are encouraged, since the behaviour of this star’s historical fading episodes may indicate rapidly-changing evolution of protoplanetary clumps in the circumstellar disc. V1117 Her often seems to have these precursory fades before the main event, but not so often, if at all, afterwards - suggesting maybe asymmetry in the circumstellar clumps. So it may be worth watching for these too.