Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 1, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 806 | S17 | E23 | 08 | 0050 | Beta-Gamma | Sep 4, 2005 | Sep 11, 2005 | Sep 24, 2005 |
| № 805 | S89 | E21 | 02 | 0050 | Alpha | Sep 4, 2005 | Sep 14, 2005 | Oct 5, 2005 |
| № 803 | N11 | W13 | 08 | 0020 | Beta | Sep 1, 2005 | Sep 8, 2005 | Sep 21, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to September 2005. The gray background is the average SSN index.
