Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2354 | S19 | W78 | 02 | 0010 | Alpha | May 23, 2015 | May 30, 2015 | Jun 13, 2015 |
| № 2353 | N07 | W78 | 02 | 0030 | Alpha | May 23, 2015 | May 30, 2015 | Jun 13, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to May 2015. The gray background is the average SSN index.
