hour angle

Từ điển Oxford Learners Wordfinder Dictionary

noun

1. the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body (Freq. 1)
• Hypernyms:
distance
2. (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
• Syn:
HA
• Topics:
astronomy, uranology
• Hypernyms:
angular distance