英语词汇“celestial longitude”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

celestial longitude

noun Astronomy

The angular distance of a point east of the First Point of Aries, measured along the ecliptic. Compare with right ascension.But in fact, from day to day the earthbound observer does see the midday Sun at a different point along the same celestial longitude - up or down relative to the horizon....

By the time he returned home in January 1678, he had recorded the celestial longitudes and latitudes of 341 stars and observed a transit of Mercury across the Sun's disk.
Technically, a conjunction describes a precise alignment of heavenly bodies that happen to have the same celestial longitude - that is, they appear to line up in the sky, one directly above the other.

单词	celestial longitude
释义	celestial longitude noun Astronomy The angular distance of a point east of the First Point of Aries, measured along the ecliptic. Compare with right ascension.But in fact, from day to day the earthbound observer does see the midday Sun at a different point along the same celestial longitude - up or down relative to the horizon.... By the time he returned home in January 1678, he had recorded the celestial longitudes and latitudes of 341 stars and observed a transit of Mercury across the Sun's disk. Technically, a conjunction describes a precise alignment of heavenly bodies that happen to have the same celestial longitude - that is, they appear to line up in the sky, one directly above the other.
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