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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2291 | N13 | W02 | 02 | 0010 | Alpha | Feb 24, 2015 | Mar 3, 2015 | Mar 16, 2015 |
| № 2290 | N20 | E18 | 03 | 0030 | Beta | Feb 25, 2015 | Mar 4, 2015 | Mar 18, 2015 |
| № 2289 | S07 | E17 | 01 | 0010 | Alpha | Feb 25, 2015 | Mar 4, 2015 | Mar 18, 2015 |
| № 2287 | N15 | W33 | 03 | 0020 | Beta | Feb 21, 2015 | Feb 28, 2015 | Mar 14, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to February 2015. The gray background is the average SSN index.
