No image for the selected date
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.
