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) | |
|---|---|---|---|---|---|---|---|---|
| № 9607 | S16 | E68 | 04 | 0210 | Beta | Sep 11, 2001 | Sep 18, 2001 | Oct 2, 2001 |
| № 9606 | S17 | E45 | 10 | 0150 | Beta | Sep 9, 2001 | Sep 16, 2001 | Sep 30, 2001 |
| № 9605 | S19 | E39 | 06 | 0070 | Beta | Sep 9, 2001 | Sep 16, 2001 | Sep 30, 2001 |
| № 9604 | S22 | W76 | 05 | 0250 | Beta | Aug 31, 2001 | Sep 7, 2001 | Sep 21, 2001 |
| № 9603 | S08 | E36 | 01 | 0030 | Alpha | Sep 9, 2001 | Sep 15, 2001 | Sep 29, 2001 |
| № 9601 | N13 | W22 | 49 | 0780 | Beta-Gamma | Sep 4, 2001 | Sep 11, 2001 | Sep 25, 2001 |
| № 9599 | S18 | W47 | 01 | 0030 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
| № 9596 | N21 | W48 | 01 | 0140 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
| № 9591 | S19 | W92 | 01 | 0100 | Alpha | 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.
