Gaia DR2 6737058388839298432 = Gaia23bly possible superoutburst

Large-amplitude variable selected by Mowlavi et al. (2021).

http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bly/

Past outbursts in ATLAS sometimes showed a precursor or rebrightening. Long-Porb SU UMa star?

YYYYMMDD(UT) mag observer 20230331.0907 17.040c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.0939 17.197c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.0999 17.171c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1108 17.083c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230331.1553 17.354c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1113 17.134o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1141 17.009o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1230 16.976o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230402.1361 16.769o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3325 17.054o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3418 17.200o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3460 16.872o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3489 17.102o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3517 17.261o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3555 17.009o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.3658 17.207o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230403.4139 17.251o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0659 16.385o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0686 16.372o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0740 16.289o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.0842 16.314o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2812 14.108o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2841 14.095o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2892 14.011o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.3102 14.136o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0678 14.013o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0707 14.336o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230408.0863 14.047o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2791 14.495o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2819 14.511o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230409.2871 14.498o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))