Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 3, 2001. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9603 | S08 | E65 | 01 | 0040 | Alpha | Sep 9, 2001 | Sep 16, 2001 | Sep 29, 2001 |
| № 9602 | S08 | E19 | 06 | 0020 | Beta | Sep 5, 2001 | Sep 12, 2001 | Sep 26, 2001 |
| № 9601 | N14 | E09 | 51 | 0700 | Gamma | Sep 5, 2001 | Sep 11, 2001 | Sep 25, 2001 |
| № 9599 | S18 | W13 | 07 | 0100 | Beta | Sep 3, 2001 | Sep 10, 2001 | Sep 24, 2001 |
| № 9596 | N22 | W22 | 01 | 0160 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
| № 9591 | S18 | W64 | 15 | 0340 | Beta-Gamma-Delta | Aug 30, 2001 | Sep 6, 2001 | Sep 20, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to September 2001. The gray background is the average SSN index.
