No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1306 | N13 | E60 | 01 | 0020 | Alpha | Oct 3, 2011 | Oct 10, 2011 | Oct 24, 2011 |
| № 1305 | N12 | E42 | 01 | 0080 | Alpha | Oct 2, 2011 | Oct 9, 2011 | Oct 23, 2011 |
| № 1304 | N12 | W19 | 03 | 0010 | Beta | Sep 27, 2011 | Oct 4, 2011 | Oct 18, 2011 |
| № 1302 | N13 | E09 | 26 | 0980 | Beta-Gamma-Delta | Sep 30, 2011 | Oct 6, 2011 | Oct 20, 2011 |
| № 1301 | N18 | W35 | 01 | 0020 | Alpha | Sep 26, 2011 | Oct 3, 2011 | Oct 17, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
