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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1375 | N09 | E39 | 04 | 0080 | Beta | Dec 15, 2011 | Dec 22, 2011 | Jan 4, 2012 |
| № 1374 | S17 | E41 | 02 | 0140 | Alpha | Dec 15, 2011 | Dec 22, 2011 | Jan 5, 2012 |
| № 1372 | N08 | W10 | 09 | 0040 | Beta | Dec 11, 2011 | Dec 18, 2011 | Jan 1, 2012 |
| № 1367 | S18 | W47 | 01 | 0010 | Alpha | Dec 8, 2011 | Dec 15, 2011 | Dec 29, 2011 |
| № 1366 | N18 | W27 | 01 | 0050 | Alpha | Dec 10, 2011 | Dec 17, 2011 | Dec 31, 2011 |
| № 1364 | N18 | W71 | 02 | 0050 | Beta | Dec 7, 2011 | Dec 13, 2011 | Dec 27, 2011 |
| № 1363 | S20 | W74 | 01 | 0250 | Alpha | Dec 6, 2011 | Dec 13, 2011 | Dec 27, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to December 2011. The gray background is the average SSN index.
