galactic equator

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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

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galactic equator

astronomy

Also known as: galactic circle

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In galactic coordinate
…plane is defined by the galactic equator, the great circle in the sky best fitting the plane of the Milky Way, as determined by a combination of optical and radio measurements. The galactic equator is inclined at about 62°36′ to the celestial equator, which is the projection of Earth’s Equator…
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