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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 30, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1639 | S16 | E48 | 05 | 0070 | Beta | Jan 3, 2013 | Jan 10, 2013 | Jan 24, 2013 |
| № 1638 | N12 | E45 | 01 | 0150 | Alpha | Jan 3, 2013 | Jan 10, 2013 | Jan 24, 2013 |
| № 1637 | N06 | E09 | 01 | 0000 | Alpha | Jan 1, 2013 | Jan 7, 2013 | Jan 21, 2013 |
| № 1635 | N13 | W72 | 02 | 0020 | Alpha | Dec 25, 2012 | Jan 1, 2013 | Jan 15, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to December 2012. The gray background is the average SSN index.
