This MNRAS submission on The First Multi-Messenger Nova: External Shocks, TeV Photons, and Neutrinos in the Next Eruption of T CrB takes another look at timescales for its eruption recurrence.
Taking various factors into consideration, the authors come up with a recurrence time-scale of Trec ≃ 80±12 yr.
However, they note that if substantial weight is instead assigned to the proposed historical eruptions of T CrB, and the 1217–1787 interval between eruptions is assumed to contain seven recurrence cycles, the resulting recurrence history implies a much narrower characteristic time-scale of ≃ 79–80 yr with a dispersion of only ∼ 1–2 yr. The latter is in line with Schaefer’s predictions.
We are now at T(last eruption) + 0.6 years and we keep looking…..