Celestial Sphere

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Celestial Sphere
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Terms in this set (20)
EquatorAn imaginary circle around the middle of the earth, halfway between the North Pole and the South PoleCelestial EquatorAn imaginary circle created by extending Earth's equator into spaceRight Ascension (RA)Analogous to longitude, but on the celestial sphere; the angular east-west distance between the spring equinox and a location on the celestial sphere.Declination (DEC)Analogous to latitude, but on the celestial sphere; it is the angular north-south distance between the celestial equator and a location on the celestial sphere.Latitudedistance north or south of the Equator, measured in degreesLongitudeDistance east or west of the prime meridian, measured in degreesplane of the eclipticThe plane that passes through the sun and earth, enscribing the orbital path of the earth around the sunHorizonthe line at which the sky and Earth appear to meetCircumpolar Starsstars that can be seen at all times of the year and all times of night.Angle of Hours, Min, SecondsUnits used to measure Latitude, Longitude and Right Ascension

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