GOTO065054.49+593624.51: 10th (?) rebrightening

GOTO065054.49+593624.51 was discovered in outburst by Tom Killestein et al. on October 4, 2024 (ATEL #16842). The object has been identified as a WZ Sge-type dwarf nova, an interesting subclass of cataclysmic variables known for their distinctive behaviors.

Unlike typical dwarf novae, WZ Sge-type stars sometimes display multiple rebrightening events following a superoutburst. These rebrightenings can vary significantly in both number and intensity, with some systems exhibiting as many as ten or more events. Notable examples of such systems include AL Com, EG Cnc, ASASSN-18fk, etc.

GOTO065054.49+593624.51 now firmly establishes itself among these intriguing systems. An inspection of the AAVSO light curve reveals at least nine rebrightenings since its initial detection. With the current outburst (ongoing right now!), we are observing the 10th rebrightening within approximately 100 days. This makes GOTO065054.49+593624.51 a fascinating object worthy of continued observation and study.

Tonight, I have begun time-series photometry to investigate whether any superhumps are still present in the system. Monitoring in the coming weeks and months will be crucial to further understanding its behavior and underlying mechanisms.

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