Observing Campaign #882: Continued monitoring requested for PSN J12355230+2755559 (Com)

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Abstract: Following on AAVSO Alert Notice 847 (January 2024), Dr. Mojgan Aghakhanloo (University of Virginia) has extended her request for AAVSO observers’ assistance in monitoring the very interesting SDOR variable PSN J12355230+2755559 (= AT 2016blu) (Com) to document its behavior throughout 2025 at least.

Justification: Dr. Aghakhanloo writes: "AT 2016blu has experienced at least 19 outbursts from 2012 to 2022. We found that AT 2016blu’s outbursts occur approximately every 113 days. Subsequent to the AAVSO observing campaign’s start in January 2024, at least 6 brightenings were observed by the campaign’s end in July. Recent observations from the Zwicky Transient Facility (ZTF) show it was bright in December 2024, and was above minimum on January 5, 2025, around the time that a brightening event was expected. As the light curve of AT 2016blu shows brief, multi-peaked outbursts that sometimes occur before or after the expected periastron time, and as this object’s light curve is complex, it is crucial to monitor it over the coming months.

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