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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1229 | N16 | E38 | 04 | 0030 | Beta | Jun 4, 2011 | Jun 11, 2011 | Jun 24, 2011 |
| № 1228 | N17 | E55 | 01 | 0110 | Alpha | Jun 5, 2011 | Jun 12, 2011 | Jun 26, 2011 |
| № 1227 | S18 | E54 | 06 | 0170 | Beta-Gamma | Jun 5, 2011 | Jun 12, 2011 | Jun 26, 2011 |
| № 1226 | S21 | E42 | 11 | 0360 | Beta-Gamma | Jun 4, 2011 | Jun 11, 2011 | Jun 25, 2011 |
| № 1225 | N17 | E18 | 01 | 0040 | Alpha | Jun 2, 2011 | Jun 9, 2011 | Jun 23, 2011 |
| № 1224 | N20 | W56 | 09 | 0140 | Beta-Gamma | May 28, 2011 | Jun 4, 2011 | Jun 17, 2011 |
| № 1222 | N16 | W83 | 03 | 0150 | Beta | May 26, 2011 | Jun 2, 2011 | Jun 15, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to May 2011. The gray background is the average SSN index.
