  HS Hydrae is a short period eclipsing binary (P_orb=1.57 day) that belongs to
a rare group of systems observed to have rapidly changing inclinations. This
evolution is due to a third star on an intermediate orbit, and results in
significant differences in eclipse depths and timings year-to-year. Zasche &
Paschke (2012) revealed that HS Hydrae's eclipses were rapidly fading from
view, predicting they would cease around 2022. Using 25 days of photometric
data from Sector 009 of the Transiting Exoplanet Survey Satellite (TESS), we
find that the primary eclipses for HS Hydrae were only 0.00173+/-0.00007 mag in
depth in March 2019. This data from TESS likely represents the last eclipses
detected from HS Hydrae. We also searched the Digitization of the Harvard
Astronomical Plate Collection (DASCH) archive for historic data from the
system. With a total baseline of over 125 years, this unique combination of
data sets - from photographic plates to precision space-based photometry -
allows us to trace the emergence and decay of eclipses from HS Hydrae, and
further constrain its evolution. Recent TESS observations from Sector 035
confirm that eclipses have ceased for HS Hya, and we estimate they will begin
again in 2195.

Solar and Stellar Astrophysics