Fig. 3: BW3 apparent brightness all-sky plot from nine passes observed from Steward Observatory.

The apparent brightness of BW3 after unfolding as observed by the Steward Observatory SSA astrograph on nine different passes on nine different nights in November and December 2022 (11–14 November, 20–22 November, 24 November and 12 December UT). This all-sky plot shows the correlation of apparent brightness with the on-sky position of the satellite relative to the Sun (yellow mark on the right). To standardize the Sun’s azimuth, which is not the same for all observations, the plotted position of each point is rotated around zenith such that the below-horizon Sun is at the same azimuth (west) for all measurements.