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) | |
|---|---|---|---|---|---|---|---|---|
| № 9601 | N14 | E32 | 45 | 0760 | Beta-Gamma | Sep 4, 2001 | Sep 11, 2001 | Sep 25, 2001 |
| № 9599 | S18 | E11 | 14 | 0190 | Beta | Sep 3, 2001 | Sep 10, 2001 | Sep 23, 2001 |
| № 9596 | N22 | E01 | 01 | 0150 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
| № 9595 | N17 | W70 | 03 | 0030 | Beta | Aug 28, 2001 | Sep 4, 2001 | Sep 17, 2001 |
| № 9591 | S20 | W39 | 17 | 0400 | Beta-Gamma-Delta | Aug 30, 2001 | Sep 6, 2001 | Sep 20, 2001 |
| № 9590 | S29 | W68 | 02 | 0150 | Alpha | Aug 28, 2001 | Sep 4, 2001 | Sep 18, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, September. Gray background - average solar cycle.
