Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1320 | S21 | W51 | 04 | 0030 | Beta | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
| № 1319 | N09 | E16 | 20 | 0080 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1318 | N20 | W31 | 07 | 0040 | Beta | Oct 14, 2011 | Oct 21, 2011 | Nov 3, 2011 |
| № 1317 | S26 | E28 | 01 | 0070 | Alpha | Oct 18, 2011 | Oct 25, 2011 | Nov 8, 2011 |
| № 1316 | S12 | E15 | 09 | 0330 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1315 | N20 | W44 | 03 | 0010 | Beta | Oct 13, 2011 | Oct 20, 2011 | Nov 2, 2011 |
| № 1314 | N26 | E09 | 06 | 0280 | Beta | Oct 17, 2011 | Oct 24, 2011 | Nov 7, 2011 |
| № 1313 | S16 | W52 | 05 | 0080 | Beta | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
| № 1312 | N23 | W55 | 01 | 0270 | Alpha | Oct 12, 2011 | Oct 19, 2011 | Nov 2, 2011 |
| № 1309 | N24 | W86 | 01 | 0060 | Alpha | Oct 9, 2011 | Oct 16, 2011 | Oct 30, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to October 2011. The gray background is the average SSN index.
