Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 12, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2323 | S16 | W30 | 04 | 0010 | Beta | Apr 11, 2015 | Apr 17, 2015 | May 1, 2015 |
| № 2322 | N14 | E42 | 02 | 0020 | Beta | Apr 16, 2015 | Apr 23, 2015 | May 6, 2015 |
| № 2321 | N12 | E70 | 05 | 0200 | Beta-Gamma | Apr 18, 2015 | Apr 25, 2015 | May 9, 2015 |
| № 2320 | S14 | W48 | 12 | 0090 | Beta-Gamma | Apr 9, 2015 | Apr 16, 2015 | Apr 30, 2015 |
| № 2318 | N08 | W36 | 01 | 0010 | Alpha | Apr 10, 2015 | Apr 17, 2015 | Apr 30, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to April 2015. The gray background is the average SSN index.
