Android application in Js, kotlin, c# of choice

The essence of the program is that we are not looking at the real starry sky but at https://stellarium-web.org/, that is, we point the camera at the monitor where this site is open, then we select 3 stars (most likely this is done using opencv methods) and then these points that we found (stars) we must compare or somehow identify which star it is, most likely this is done using some catalog that compares these stars based on some parameters (this is the most difficult and I would like you to come up with how this can be done and what algorithm you have developed for comparison) also after determining the stars, the program should not search for new stars but only work with the selected ones. Also, later on, it will be necessary to parse other data from Wikipedia about these stars. Next or at the very beginning, it will be necessary to display the coordinates of these stars relative to the camera of the phone, that is, changing values ​​relative to the camera (x;y). As fast as possible