local sidereal time

(LST) The sidereal time at a particular location. A celestial object crosses the local meridian when the LST is equal to the object's right ascension. The local mean sideral time (LMST) is equal to the Greenwich mean sideral time plus four minutes for each degree of longitude that the location is east of Greenwich, four minutes being subtracted for each degree west. The local apparent sideral time (LAST) is obtained by adding the equation of the equinoxes (see sidereal time) to the LMST.

local sidereal time

[′lō·kəl sə¦dir·ē·əl ¦tīm] (astronomy) The arc of the celestial equator, or the angle at the celestial pole which is between the upper branch of the local celestial meridian and the hour circle of the vernal equinox.

单词	local sidereal time
释义	local sidereal time local sidereal time (LST) The sidereal time at a particular location. A celestial object crosses the local meridian when the LST is equal to the object's right ascension. The local mean sideral time (LMST) is equal to the Greenwich mean sideral time plus four minutes for each degree of longitude that the location is east of Greenwich, four minutes being subtracted for each degree west. The local apparent sideral time (LAST) is obtained by adding the equation of the equinoxes (see sidereal time) to the LMST. local sidereal time [′lō·kəl sə¦dir·ē·əl ¦tīm] (astronomy) The arc of the celestial equator, or the angle at the celestial pole which is between the upper branch of the local celestial meridian and the hour circle of the vernal equinox. AcronymsSeeLST
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