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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1384 | N12 | E61 | 04 | 0090 | Beta | Dec 27, 2011 | Jan 2, 2012 | Jan 16, 2012 |
| № 1383 | N03 | E53 | 01 | 0040 | Alpha | Dec 26, 2011 | Jan 2, 2012 | Jan 15, 2012 |
| № 1382 | S19 | E06 | 13 | 0120 | Beta | Dec 22, 2011 | Dec 29, 2011 | Jan 12, 2012 |
| № 1381 | S17 | W01 | 08 | 0090 | Beta | Dec 22, 2011 | Dec 29, 2011 | Jan 11, 2012 |
| № 1380 | S21 | E31 | 04 | 0030 | Beta | Dec 24, 2011 | Dec 31, 2011 | Jan 14, 2012 |
| № 1377 | N12 | W40 | 03 | 0010 | Beta | Dec 19, 2011 | Dec 26, 2011 | Jan 8, 2012 |
| № 1376 | N19 | W46 | 14 | 0040 | Beta | Dec 18, 2011 | Dec 25, 2011 | Jan 8, 2012 |
| № 1374 | S19 | W90 | 01 | 0050 | Alpha | Dec 15, 2011 | Dec 22, 2011 | Jan 5, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to December 2011. The gray background is the average SSN index.
