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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2473 | S22 | W05 | 38 | 0530 | Beta-Delta | Dec 29, 2015 | Jan 5, 2016 | Jan 18, 2016 |
| № 2472 | N04 | W02 | 09 | 0030 | Beta | Dec 29, 2015 | Jan 5, 2016 | Jan 18, 2016 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to December 2015. The gray background is the average SSN index.
