Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9603 | S08 | E66 | 01 | 0040 | Alpha | Sep 9, 2001 | Sep 16, 2001 | Sep 29, 2001 |
| № 9602 | S08 | E20 | 06 | 0020 | Beta | Sep 5, 2001 | Sep 12, 2001 | Sep 26, 2001 |
| № 9601 | N14 | E10 | 51 | 0700 | Gamma | Sep 5, 2001 | Sep 11, 2001 | Sep 25, 2001 |
| № 9599 | S18 | W12 | 07 | 0100 | Beta | Sep 3, 2001 | Sep 10, 2001 | Sep 24, 2001 |
| № 9596 | N22 | W21 | 01 | 0160 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
| № 9591 | S18 | W63 | 15 | 0340 | Beta-Gamma-Delta | Aug 30, 2001 | Sep 6, 2001 | Sep 20, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, September. Gray background - average solar cycle.
