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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1262 | N16 | W36 | 04 | 0020 | Beta-Gamma-Delta | Jul 26, 2011 | Aug 2, 2011 | Aug 16, 2011 |
| № 1261 | N15 | E62 | 05 | 0250 | Beta | Aug 3, 2011 | Aug 9, 2011 | Aug 23, 2011 |
| № 1260 | N18 | E32 | 15 | 0110 | Beta-Gamma | Jul 31, 2011 | Aug 7, 2011 | Aug 21, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to July 2011. The gray background is the average SSN index.
