No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 2, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1284 | S18 | W80 | 02 | 0030 | Alpha | Aug 28, 2011 | Sep 4, 2011 | Sep 17, 2011 |
| № 1283 | N12 | E51 | 10 | 0200 | Beta | Sep 7, 2011 | Sep 14, 2011 | Sep 27, 2011 |
| № 1282 | N25 | W24 | 13 | 0050 | Beta | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1281 | S21 | E14 | 16 | 0160 | Beta | Sep 4, 2011 | Sep 11, 2011 | Sep 25, 2011 |
| № 1280 | N12 | W51 | 04 | 0030 | Beta | Aug 30, 2011 | Sep 6, 2011 | Sep 19, 2011 |
| № 1279 | N13 | W17 | 03 | 0060 | Alpha | Sep 2, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1277 | N18 | W25 | 01 | 0060 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
