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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 5, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1185 | N23 | E64 | 01 | 0050 | Alpha | Apr 11, 2011 | Apr 18, 2011 | May 2, 2011 |
| № 1184 | N17 | W11 | 22 | 0170 | Beta | Apr 5, 2011 | Apr 12, 2011 | Apr 26, 2011 |
| № 1183 | N15 | W39 | 07 | 0090 | Beta | Apr 3, 2011 | Apr 10, 2011 | Apr 23, 2011 |
| № 1181 | S27 | W48 | 02 | 0010 | Alpha | Apr 2, 2011 | Apr 9, 2011 | Apr 23, 2011 |
| № 1180 | N24 | W61 | 01 | 0020 | Alpha | Apr 1, 2011 | Apr 8, 2011 | Apr 22, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to April 2011. The gray background is the average SSN index.
