One of the ongoing science projects with the HOYS data is the search for periodic variables in the Pelican Nebula. Here we show one of the easiest to find, characterise and verify that it is real stars (you can see the variations directly in the light curve without phase folding the data). The light curve is of the star 2MASS J20511824+4413082. The star is a know emission line object and at a distance of about 830pc. Hence a very likely member of the population of young stars in this star forming region.

The shape of the fluctuations in brightness is not perfectly sine-shaped. The brightness increase lasts about 60% of the period and the decrease just 40%. The period itself is about 7.867days. The peak to peak fluctuations are about 0.25, 0.30, 0.35, and 0.40mag in I, R, V, and B, respectively. We will work on the characterisation of all the periodic variables over the next few months, so there will be more updates soon.