Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1366 | N17 | E65 | 01 | 0060 | Alpha | Dec 10, 2011 | Dec 17, 2011 | Dec 30, 2011 |
| № 1365 | N20 | E01 | 07 | 0060 | Beta | Dec 5, 2011 | Dec 12, 2011 | Dec 26, 2011 |
| № 1364 | N18 | E20 | 01 | 0060 | Alpha | Dec 7, 2011 | Dec 13, 2011 | Dec 27, 2011 |
| № 1363 | S22 | E16 | 29 | 0330 | Beta-Gamma | Dec 6, 2011 | Dec 13, 2011 | Dec 27, 2011 |
| № 1362 | N08 | W06 | 16 | 0220 | Beta | Dec 5, 2011 | Dec 11, 2011 | Dec 25, 2011 |
| № 1361 | N19 | W45 | 11 | 0090 | Beta | Dec 2, 2011 | Dec 8, 2011 | Dec 22, 2011 |
| № 1358 | N19 | W68 | 03 | 0050 | Beta | Nov 30, 2011 | Dec 7, 2011 | Dec 20, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to December 2011. The gray background is the average SSN index.
