Assertion: star's distance | /r/HasProperty | measured along the arc of the equator
Facets:
value: between the meridian circle
type: LOCATION
value: between a primary meridian
type: LOCATION
Source sentences:
text: The longitude of a station is defined as the angular distance measured along the arc of the equator between a primary meridian , which is a reference meridian, and the meridian circle passing through the station.