Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1322 | S27 | W64 | 04 | 0010 | Beta | Oct 13, 2011 | Oct 20, 2011 | Nov 3, 2011 |
| № 1321 | S14 | E37 | 02 | 0010 | Beta | Oct 21, 2011 | Oct 28, 2011 | Nov 10, 2011 |
| № 1320 | S21 | W76 | 02 | 0010 | Alpha | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
| № 1319 | N11 | W13 | 30 | 0280 | Beta-Gamma | Oct 17, 2011 | Oct 24, 2011 | Nov 6, 2011 |
| № 1318 | N21 | W58 | 01 | 0010 | Alpha | Oct 14, 2011 | Oct 20, 2011 | Nov 3, 2011 |
| № 1317 | S26 | E01 | 01 | 0080 | Alpha | Oct 18, 2011 | Oct 25, 2011 | Nov 8, 2011 |
| № 1316 | S12 | W11 | 11 | 0340 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1314 | N28 | W18 | 04 | 0310 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1313 | S16 | W78 | 02 | 0010 | Alpha | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
| № 1312 | N22 | W81 | 01 | 0180 | Alpha | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to October 2011. The gray background is the average SSN index.
