A low-resolution spectrum obtained on 2021 February 19.4 UT resembles that of classical novae during the nebular phase, suggesting that the nova eruption began more than a month ago. The red continuum and the relatively strong O I line at 844.6 nm indicates that the nova is highly reddened and also raise questions about the possibility of a recent dust formation event in the nova (2021ATel14413....1K). The orbital period of 0.9400430 ± 0.000027 d indicates that the system harbours an evolved secondary star, likely a subgiant. Minimum magnitude outside eclipses is Ic ~21.2 (2021ATel14410....1M).
Type (nova) from 2021ATel14413....1K. Primary name changed and eruption year added. Type (eclipsing), minimum magnitude (at mid-eclipse in quiescence) and orbital period from 2021ATel14410....1M. Maximum magnitude from AAVSO data (optical peak missed, true maximum brightness unknown).
