Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1640 | N28 | E22 | 02 | 0040 | Beta | Jan 3, 2013 | Jan 10, 2013 | Jan 24, 2013 |
| № 1639 | S17 | E34 | 04 | 0030 | Beta | Jan 3, 2013 | Jan 10, 2013 | Jan 24, 2013 |
| № 1638 | N12 | E33 | 01 | 0150 | Alpha | Jan 3, 2013 | Jan 10, 2013 | Jan 24, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to December 2012. The gray background is the average SSN index.
