The TESS satellite captured the most recent superoutburst completely. I estimate a start date of JD 2459633.
The most recent estimated super outburst start dates are complied below. Sources are BAA database, AAVSO DB and TESS results.
JD-2450000
9162.5 56.5
9224.2 61.7
9283 58.8
9344 61
9403 59
9463 60
9519 56
9577 58
9633 56 TESS image below
These give an average of 58.5 days.
Thanks to all contributing to these measurements
Stewart
