Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 13, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1210 | N19 | W32 | 01 | 0020 | Alpha | May 11, 2011 | May 18, 2011 | Jun 1, 2011 |
| № 1208 | N12 | W04 | 08 | 0050 | Beta | May 14, 2011 | May 20, 2011 | Jun 3, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to May 2011. The gray background is the average SSN index.
