Secular Brightness Trends of Starlink and OneWeb Satellites
arXiv:2604.13145
Abstract
Magnitudes recorded from 2021 through 2026 for Starlink VisorSats reveal brightening of 0.6 magnitudes, while those of OneWeb show dimming of 0.4. Both trends are significant at 3 sigma. This study is based on 1.6 million magnitudes recorded by the MMT9 robotic observatory.
Reviewed by the IAU Center for the Projection of the Dark and Quiet Sky