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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2348 | S09 | E62 | 05 | 0100 | Alpha | May 21, 2015 | May 27, 2015 | Jun 10, 2015 |
| № 2347 | N05 | E28 | 01 | 0010 | Alpha | May 18, 2015 | May 25, 2015 | Jun 7, 2015 |
| № 2346 | S08 | E30 | 07 | 0050 | Beta | May 18, 2015 | May 25, 2015 | Jun 7, 2015 |
| № 2344 | S10 | E23 | 02 | 0040 | Beta | May 18, 2015 | May 24, 2015 | Jun 7, 2015 |
| № 2343 | N09 | W11 | 03 | 0010 | Beta | May 15, 2015 | May 22, 2015 | Jun 4, 2015 |
| № 2342 | N17 | W04 | 06 | 0060 | Beta | May 16, 2015 | May 22, 2015 | Jun 5, 2015 |
| № 2341 | S20 | W16 | 01 | 0080 | Alpha | May 15, 2015 | May 22, 2015 | Jun 4, 2015 |
| № 2339 | N11 | W43 | 21 | 0400 | Beta | May 13, 2015 | May 19, 2015 | Jun 2, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to May 2015. The gray background is the average SSN index.
