Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 23, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1109 | N22 | E63 | 04 | 0200 | Beta | Sep 29, 2010 | Oct 6, 2010 | Oct 20, 2010 |
| № 1108 | S30 | W13 | 02 | 0340 | Alpha | Sep 23, 2010 | Sep 30, 2010 | Oct 15, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to September 2010. The gray background is the average SSN index.
