Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1324 | N11 | E81 | 02 | 0090 | Alpha | Oct 25, 2011 | Nov 1, 2011 | Nov 14, 2011 |
| № 1323 | N23 | E53 | 02 | 0010 | Alpha | Oct 23, 2011 | Oct 30, 2011 | Nov 13, 2011 |
| № 1322 | S27 | W77 | 03 | 0070 | Beta | Oct 13, 2011 | Oct 20, 2011 | Nov 3, 2011 |
| № 1321 | S15 | E23 | 03 | 0020 | Beta | Oct 21, 2011 | Oct 27, 2011 | Nov 10, 2011 |
| № 1319 | N10 | W25 | 32 | 0420 | Beta-Gamma | Oct 17, 2011 | Oct 24, 2011 | Nov 6, 2011 |
| № 1318 | N19 | W69 | 02 | 0030 | Beta | Oct 14, 2011 | Oct 21, 2011 | Nov 3, 2011 |
| № 1317 | S27 | W10 | 01 | 0050 | Alpha | Oct 18, 2011 | Oct 25, 2011 | Nov 8, 2011 |
| № 1316 | S12 | W24 | 06 | 0150 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1314 | N27 | W29 | 01 | 0230 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1313 | S16 | W80 | 02 | 0010 | Beta | Oct 13, 2011 | Oct 20, 2011 | Nov 2, 2011 |
| № 1312 | N22 | W95 | 01 | 0090 | Alpha | Oct 12, 2011 | Oct 19, 2011 | Nov 1, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to October 2011. The gray background is the average SSN index.
