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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 17, 2015. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2470 | N14 | E31 | 12 | 0530 | Beta | Dec 20, 2015 | Dec 27, 2015 | Jan 10, 2016 |
| № 2469 | N18 | E13 | 02 | 0020 | Alpha | Dec 19, 2015 | Dec 26, 2015 | Jan 9, 2016 |
| № 2468 | S16 | W13 | 05 | 0030 | Beta | Dec 17, 2015 | Dec 24, 2015 | Jan 7, 2016 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to December 2015. The gray background is the average SSN index.
