Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1325 | N16 | E83 | 01 | 0090 | Alpha | Oct 27, 2011 | Nov 3, 2011 | Nov 17, 2011 |
| № 1324 | N12 | E56 | 26 | 0340 | Beta-Gamma | Oct 25, 2011 | Nov 1, 2011 | Nov 15, 2011 |
| № 1321 | S14 | W02 | 06 | 0020 | Beta | Oct 21, 2011 | Oct 28, 2011 | Nov 10, 2011 |
| № 1319 | N10 | W52 | 16 | 0330 | Beta-Gamma | Oct 17, 2011 | Oct 24, 2011 | Nov 6, 2011 |
| № 1317 | S27 | W36 | 01 | 0080 | Alpha | Oct 18, 2011 | Oct 25, 2011 | Nov 8, 2011 |
| № 1316 | S12 | W48 | 07 | 0110 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1314 | N28 | W57 | 01 | 0260 | Alpha | Oct 16, 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.
