Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 19, 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 | N10 | E74 | 03 | 0120 | Beta | Dec 25, 2012 | Jan 1, 2013 | Jan 15, 2013 |
| № 1634 | S13 | E30 | 05 | 0080 | Alpha | Dec 22, 2012 | Dec 29, 2012 | Jan 12, 2013 |
| № 1633 | S07 | E29 | 13 | 0320 | Beta-Gamma | Dec 22, 2012 | Dec 29, 2012 | Jan 11, 2013 |
| № 1631 | N23 | W87 | 05 | 0080 | Beta | Dec 13, 2012 | Dec 20, 2012 | Jan 3, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to December 2012. The gray background is the average SSN index.
