AI Draconis / AI Dra
Primary minimum of EA eclipsing binary AI Draconis.
Constructed from 1219 images taken with a 2" object lens and Atik Titan monochrome CCD camera, unfiltered, from Somerby Observatory, Melton Mowbray, UK.
Photometry in AIP4WIN.
The results have not been transformed.
Primary minimum observed at HJD 2457291.418232
Constructed from 1219 images taken with a 2" object lens and Atik Titan monochrome CCD camera, unfiltered, from Somerby Observatory, Melton Mowbray, UK.
Photometry in AIP4WIN.
The results have not been transformed.
Primary minimum observed at HJD 2457291.418232
The following light curve and phase diagram have been constructed from 56 images taken with the Bradford Robotic Telescope Cluster Camera through the 'green' filter between 2015 April 28 and 2015 November 3.
Combining the above Bradford and Somerby observations generates the following light curve and phase diagram.
The Bradford data is in black, the Somerby data is in red.
The Bradford data is in black, the Somerby data is in red.
The following two primary minima were observed visually with 15x80 binoculars.
Notes
The current catalogue value for the period is 1.1988146 d, ref GCVS and AAVSO VSX, and 1.1988184 d ref Kreiner. (Accessed 2017 Aug 11)
This star has o-c interest, see Kreiner et al.
This star has o-c interest, see Kreiner et al.
[This page updated 2017 August 11]