Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2333 | N20 | E12 | 02 | 0010 | Alpha | Apr 29, 2015 | May 6, 2015 | May 20, 2015 |
| № 2331 | S10 | W59 | 09 | 0240 | Beta-Gamma | Apr 24, 2015 | Apr 30, 2015 | May 14, 2015 |
| № 2327 | S08 | W49 | 03 | 0060 | Beta | Apr 24, 2015 | May 1, 2015 | May 15, 2015 |
| № 2325 | N04 | W94 | 01 | 0220 | Alpha | Apr 21, 2015 | Apr 28, 2015 | May 11, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to April 2015. The gray background is the average SSN index.
