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longitude
The angular distance measured along the earth's equator between the meridian passing through the point and the Greenwich Meridian or zero meridian.
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Astronomy and related astronomical terms
(page 15)
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“longitude”
Longitude measured (in degrees) along the ecliptic to the east from the vernal equinox: The Symbol for the celestial longitude is the Greek letter λ or lambda.
The angular distance between a celestial body and the first point of Aries, measured along the ecliptic.
This entry is located in the following unit:
Astronomy and related astronomical terms
(page 6)