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celestial equator |
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celestial equator: see equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celestial sphere . The celestial sphere is an imaginary sphere with the observer at its center. ..... Click the link for more information. . How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| During both the winter and summer solstices, the sun's position on the celestial sphere reaches its greatest distance above or below the celestial equator. Last fall, Hu and McMahon used Keck to scan a patch of sky near the celestial equator. At this point also, the celestial equator and the ecliptic equator will be at its farthest point. |
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celestial equator
