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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 20, 2012. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1635 | N09 | E60 | 05 | 0110 | Beta | Dec 25, 2012 | Jan 1, 2013 | Jan 15, 2013 |
| № 1634 | S13 | E16 | 02 | 0060 | Alpha | Dec 22, 2012 | Dec 29, 2012 | Jan 11, 2013 |
| № 1633 | S07 | E15 | 09 | 0260 | Beta | Dec 22, 2012 | Dec 29, 2012 | Jan 11, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to December 2012. The gray background is the average SSN index.
