We present positions, proper motions, and near-infrared photometry for 966
known objects with spectral types later than M observed as part of the the
UKIRT Hemisphere Survey (UHS). We augment the photometry and astrometry from
UHS with information from Gaia DR3, Pan-STARRS DR2, and CatWISE 2020 to produce
a database of homogeneous photometry and astrometry for this sample. The
multi-epoch survey strategy of UHS allows us to determine proper motions for
most sources, with a median proper motion uncertainty of ∼3.6 mas
yr−1. Our UHS proper motion measurements are generally in good agreement
with those from Gaia DR3, Pan-STARRS, and CatWISE 2020, with UHS proper motions
typically more precise than those from CatWISE 2020 and Pan-STARRS but not Gaia
DR3. We critically analyze publicly available spectra for 406 members of this
sample and provide updated near-infrared spectral types for ∼100 objects.
We determine typical colors as a function of spectral type and provide absolute
magnitude vs. spectral type relations for UHS J- and K-band photometry.
Using newly determined proper motions, we highlight several objects of
interest, such as objects with large tangential velocities, widely separated
co-moving companions, and potential members of young nearby associations.Comment: Accepted to A