🇨🇳Chinese Source WordCode: ZH

赤经

Pronunciation / Transliteration: chì jīng

🇬🇧 Direct English Meaning:
Right ascension/ˌraɪt əˈsɛn.ʃən/
nounCEFR C1 (Advanced)Top #14500 frequency
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🇨🇳 Example Sentence in Chinese:

"赤经和赤纬是天球坐标系中的两个基本要素。"

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The angular distance of a celestial point measured eastward along the celestial equator from the vernal equinox to the hour circle passing through the point, usually expressed in hours, minutes, and seconds.

    "Astronomers use right ascension and declination to precisely map the positions of stars on the celestial sphere."
  2. 2

    The coordinate in the equatorial coordinate system analogous to terrestrial longitude.

    "The telescope was calibrated to track the target object based on its specific right ascension coordinate."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived as a calque of the Latin 'ascensio recta', translating the ancient Greek astronomical terminology used by Ptolemy. It entered English in the late 16th century during the Renaissance revival and standardization of observational astronomy and navigation instruments.

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