角距
1. 角距離，是由一定點到兩物體之間所量度的夾角。
Angular distance is the distance between two objects measured as an angle from a given point.
2. 緯度地球赤道北或南的角距離，例如在地圖或地球儀上沿著子午線用度數測量
The angular distance north or south of the earth's equator, measured in degrees along a meridian, as on a map or globe.
3. 距角從地球上看的兩個天體之間的角距離
The angular distance between two celestial bodies as seen from Earth.
