Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1259 | N25 | E43 | 12 | 0080 | Beta | Jul 25, 2011 | Aug 1, 2011 | Aug 15, 2011 |
| № 1258 | N12 | W64 | 01 | 0020 | Alpha | Jul 17, 2011 | Jul 24, 2011 | Aug 6, 2011 |
| № 1254 | S22 | W16 | 14 | 0110 | Beta | Jul 21, 2011 | Jul 28, 2011 | Aug 10, 2011 |
| № 1251 | N17 | W48 | 01 | 0070 | Alpha | Jul 18, 2011 | Jul 25, 2011 | Aug 8, 2011 |
| № 1250 | S26 | W89 | 01 | 0030 | Alpha | Jul 15, 2011 | Jul 22, 2011 | Aug 5, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to July 2011. The gray background is the average SSN index.
