HD1 is a galaxy-candidate identified in 2022, apparently with
a higher redshift of than any known galaxy, i.e., z = 13.27.
Both HD1 and another such candidate, HD2, were so-termed to
indicate they were identified for being H-banddropouts,
that indicate a Lyman-break galaxy (LBG) at that redshift.
Spectrography consistent with the redshift would confirm either
as a discovery.
HD1 was discovered in Cosmic Evolution Survey data.