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Friday, February 13, 2009

Finally, a sunspot, but it is a Cycle 23 spot

Just when you think cycle 23 may be over, it pops out another spot. Here is the SOHO MDI image showing a sunspot dubbed #1012, in solar cycle 23.

mdi_spot1012

From SOHO


For those wondering how this is determined, cycle 24 spots (the new cycle) normally start near the poles and gradually migrate towards the equator as the cycle progresses over 11 years. So in this case, a spot at the equator means it is a cycle 23 spot. The magnetic polarity of the spot also defines it as a cycle 23 spot.


Here is a closer view:

mdi_1012_zoom1

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