Please note that the comp star marked 130 on the G scale chart has a B-V of over 1.5, which means that (unless it is affected by interstellar reddening) it is almost certainly variable. I have an additional comp of 12.7 that will shortly be uploaded to the comp star database.
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Four outbursts have been recorded in the AAVSO database since 2017. The interval between outbursts have been 625d, 683d and 399 days. The latest outburst was on May 12, 2025. So going by the past history, the Hubble observations are looking good for November 28. Worth noting, that there is a 16.2 mag. star 7" to the E which is partly hidden on the G scale chart.
The GAIA3 spectrum shows that this star is about a K1 or K2III, yes, somewhat reddened, unsurprisingly in this part of the sky. There is no reason to expect it to be variable. The APASS photometry plus nine seasons of ASAS-3 data are consistent in showing no obvious variability.
\Brian
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Cheers Brian, dealt with my fair share of ISM-reddened comps over the past couple of years and this one looked like something of a standout. Good to know it’s OK, as otherwise there would have been a whole mag gap from 127 to 137. There’s also (from memory) a 13.2 which could be used.
Mike P, sequence team