Last Updated
：2025/11/21
celestial equator
Noun
Japanese Meaning
天の赤道 - 天球上において、地球の赤道面と一致する大円。 / 地球の赤道が天球に投影された線として理解される。
（ plural ）
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(astronomy) A great circle on the celestial sphere, coincident with the plane of earth's equator.
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celestial equator
The celestial equator provides a reference line across the sky that astronomers use to chart stellar positions.
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The celestial equator provides a reference line across the sky that astronomers use to chart stellar positions.
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