Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 27, 2004. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 664 | S11 | W40 | 08 | 0120 | Beta | Aug 25, 2004 | Sep 1, 2004 | Sep 14, 2004 |
| № 663 | N10 | W12 | 16 | 0120 | Beta | Aug 27, 2004 | Sep 3, 2004 | Sep 16, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to August 2004. The gray background is the average SSN index.
