V2EX celestial coordinates

Celestial Coordinates

Definition / 定义

天球坐标(celestial coordinates):在天文学中,用来在“天球”上精确标记天体位置的一套坐标体系。常见形式包括赤道坐标系(赤经 Right Ascension, 赤纬 Declination),也可指黄道坐标系、地平坐标系等(具体取决于观测与计算需求)。

Pronunciation / 发音

/sls.tl kor.d.nts/

Examples / 例句

Use celestial coordinates to find the star.
用天球坐标来找到那颗恒星。

After correcting for precession, the catalog lists the galaxy’s celestial coordinates in right ascension and declination.
在校正岁差之后,星表用赤经和赤纬列出了该星系的天球坐标。

Etymology / 词源

celestial 来自拉丁语 caelestis(“天空的、天上的”),词根与 caelum(“天空”)相关;coordinates 源自 *co-*(“共同”)+ 拉丁语 ordinare(“安排、排序”)的词族发展,含义是“共同用于定位的一组有序量”。合起来即“用于标定天体位置的坐标”。

Related Words / 相关词

Literary Works / 文学作品

  • Cosmos Carl Sagan(《宇宙》)
  • A Brief History of Time Stephen Hawking(《时间简史》)
  • Almagest Claudius Ptolemy(《天文学大成》)
  • Norton’s Star Atlas Arthur P. Norton(《诺顿星图》)
  • The Cambridge Encyclopedia of Astronomy Cambridge editors(《剑桥天文学百科全书》)
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