Carrington Rotation Number -- from Eric Weisstein's World of Astronomy (original) (raw)
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Carrington Rotation Number |  |
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| | | The number of rotations of the Sun's surface (as seen from the Earth) since November 9, 1853. The mean period for a single rotation of the Sun as seen from the Earth is 27.2753 days. 
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Duffett-Smith, P. "Carrington Rotation Numbers." §41 in Practical Astronomy with Your Calculator, 3rd ed. Cambridge, England: Cambridge University Press, p. 77, 1992. © 1996-2007 Eric W. Weisstein |
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