Bob: FWIW, I might well have agreed with you on this 20 years ago, but Right Ascension seems to be on its way to becoming an angle measure rather than a time measure. Indeed, the new and excellent ATLAS/Gaia catalog cites RA only as angles; astropy (STSCi) cites RA primarily as angles. In any case, RA in degrees are convenient and have become widely enough used now that it seems best to specify explicitly whether one means RA seconds (of time) or RA arcseconds.