This app plots the phase-folded Hp light curve for a user-defined Hipparcos star.
The HIP number of the star can be entered in the "HIP" field in the bottom-left corner; the "prev" and "next" buttons allow scanning through all Catalogue entries. The light curve is initially displayed with the best-fit parameters from the Catalogues. Different periods can be tried through the "Trial Period (days)" field. The buttons "inc" and "dec" allow increasing and decreasing the trial period, respectively, with a step size (in days) defined in the "Step" field.