적경 (우적경)
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<timefyi-glossary slug="right-ascension"></timefyi-glossary>정의
천구 경도에 해당하는 개념으로, 춘분점에서 천구 적도를 따라 동쪽으로 측정합니다. 적경은 시·분·초(0~24h)로 표현되며 천체의 위치를 나타내는 데 사용됩니다.