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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1328 | N18 | E25 | 01 | 0010 | Beta | Oct 24, 2011 | Oct 31, 2011 | Nov 13, 2011 |
| № 1327 | S22 | E12 | 05 | 0010 | Beta | Oct 23, 2011 | Oct 30, 2011 | Nov 13, 2011 |
| № 1326 | N16 | W34 | 02 | 0010 | Beta | Oct 19, 2011 | Oct 26, 2011 | Nov 9, 2011 |
| № 1325 | N14 | E69 | 04 | 0270 | Beta | Oct 27, 2011 | Nov 3, 2011 | Nov 17, 2011 |
| № 1324 | N11 | E42 | 27 | 0360 | Beta-Gamma | Oct 25, 2011 | Nov 1, 2011 | Nov 14, 2011 |
| № 1321 | S14 | W16 | 04 | 0010 | Beta | Oct 21, 2011 | Oct 27, 2011 | Nov 10, 2011 |
| № 1319 | N11 | W64 | 10 | 0330 | Beta-Gamma | Oct 17, 2011 | Oct 24, 2011 | Nov 6, 2011 |
| № 1317 | S26 | W49 | 01 | 0060 | Alpha | Oct 18, 2011 | Oct 25, 2011 | Nov 8, 2011 |
| № 1316 | S12 | W60 | 06 | 0060 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1314 | N29 | W67 | 01 | 0210 | Alpha | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to October 2011. The gray background is the average SSN index.
