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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1194 | S32 | W40 | 02 | 0010 | Beta | Apr 13, 2011 | Apr 20, 2011 | May 4, 2011 |
| № 1193 | N16 | E60 | 09 | 0260 | Beta | Apr 20, 2011 | Apr 27, 2011 | May 11, 2011 |
| № 1192 | N10 | W26 | 02 | 0010 | Beta | Apr 14, 2011 | Apr 21, 2011 | May 4, 2011 |
| № 1191 | N08 | E47 | 03 | 0100 | Beta | Apr 19, 2011 | Apr 26, 2011 | May 10, 2011 |
| № 1190 | N13 | W12 | 37 | 0240 | Beta | Apr 15, 2011 | Apr 22, 2011 | May 5, 2011 |
| № 1186 | N21 | W47 | 06 | 0020 | Alpha | Apr 12, 2011 | Apr 19, 2011 | May 3, 2011 |
| № 1185 | N16 | W63 | 02 | 0020 | Alpha | Apr 11, 2011 | Apr 18, 2011 | May 2, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to April 2011. The gray background is the average SSN index.
