Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1388 | S23 | E67 | 01 | 0090 | Alpha | Jan 3, 2012 | Jan 10, 2012 | Jan 24, 2012 |
| № 1387 | S21 | W57 | 17 | 0290 | Beta-Gamma | Dec 25, 2011 | Jan 1, 2012 | Jan 14, 2012 |
| № 1386 | S18 | E22 | 12 | 0200 | Beta-Gamma | Dec 31, 2011 | Jan 7, 2012 | Jan 20, 2012 |
| № 1385 | S32 | W53 | 02 | 0010 | Beta | Dec 25, 2011 | Jan 1, 2012 | Jan 15, 2012 |
| № 1384 | N12 | W27 | 09 | 0350 | Beta | Dec 27, 2011 | Jan 3, 2012 | Jan 16, 2012 |
| № 1383 | N04 | W40 | 01 | 0000 | Alpha | Dec 26, 2011 | Jan 2, 2012 | Jan 15, 2012 |
| № 1381 | S18 | W93 | 01 | 0080 | Alpha | Dec 22, 2011 | Dec 29, 2011 | Jan 11, 2012 |
| № 1380 | S20 | W66 | 03 | 0010 | Beta | Dec 24, 2011 | Dec 31, 2011 | Jan 14, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to December 2011. The gray background is the average SSN index.
