Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ha

1 sense of ha

Sense 1
hour angle, HA -- ((astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day)
       => angular distance -- (the angular separation between two objects as perceived by an observer; "he recorded angular distances between the stars")