Anonymous
Anonymous asked in 科學天文與太空 · 2 decades ago

請問天球座標的 赤經 是指什麼?

請問天球座標的 赤經 是指什麼?

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  • 2 decades ago
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    赤經 Right ascension (RA)

    天球座標的經度,單位是小時,基準點是黃道及天球赤道的交點(春分點)

    Source(s): 史丹佛資訊碩士
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