V836 Cygni / V836 Cyg
Light curve of EB/KE type eclipsing binary V836 Cygni showing primary minimum on 2nd October 2015. Observed from Somerby Observatory with the 2" Titan .
Time of minimum
Observed HJD 2457298.401444 +- 0.000054 d
Observed HJD 2457298.401444 +- 0.000054 d
Ingress to another primary minimum was observed from Somerby Observatory with the 2" Titan on 2022 October 28. Maximum was missed due to cloud.
The following light curve and phase diagram have been constructed from photometry of 61 images taken with the Bradford Robotic Telescope Cluster Camera (BRT), through their 'green' filter, between 2016 June 28 and 2016 October 1. The phase diagram has been plotted with a period of 0.653414 d.
The Somerby and BRT results have been combined in the following light curve and phase diagram. This phase diagram has been plotted with a period of 0.6534122 d. The Somerby observations are in red (2015 October 2) and blue (2022 October 28), the BRT observations are in black. Note that the BRT observations were through a 'green' filter while the Somerby observations were not through any filter. The results have not been transformed, hence the slight difference in the plotted magnitudes of the two sets of observations.
Notes
The catalogue value for the period is 0.6534122 d ref GCVS and AAVSO VSX.
This star has o-c interest, see Kreiner et al.
This star has o-c interest, see Kreiner et al.
[This page updated 2022 October 29]