Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 31, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1390 | N09 | E14 | 08 | 0040 | Beta | Jan 2, 2012 | Jan 9, 2012 | Jan 22, 2012 |
| № 1389 | S23 | E44 | 15 | 0500 | Beta-Gamma | Jan 4, 2012 | Jan 11, 2012 | Jan 25, 2012 |
| № 1388 | S23 | E29 | 01 | 0060 | Alpha | Jan 3, 2012 | Jan 10, 2012 | Jan 24, 2012 |
| № 1386 | S18 | W18 | 12 | 0100 | Beta | Dec 31, 2011 | Jan 6, 2012 | Jan 20, 2012 |
| № 1384 | N12 | W70 | 03 | 0310 | Beta | Dec 27, 2011 | Jan 3, 2012 | Jan 16, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to December 2011. The gray background is the average SSN index.
