角距
1. 角距离，是由一定点到两物体之间所量度的夹角。
Angular distance is the distance between two objects measured as an angle from a given point.
2. 纬度地球赤道北或南的角距离，例如在地图或地球仪上沿着子午线用度数测量
The angular distance north or south of the earth's equator, measured in degrees along a meridian, as on a map or globe.
3. 距角从地球上看的两个天体之间的角距离
The angular distance between two celestial bodies as seen from Earth.