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) | |
|---|---|---|---|---|---|---|---|---|
| № 9641 | S14 | E61 | 01 | 0070 | Alpha | Oct 5, 2001 | Oct 11, 2001 | Oct 25, 2001 |
| № 9640 | N10 | E56 | 02 | 0020 | Beta | Oct 4, 2001 | Oct 11, 2001 | Oct 25, 2001 |
| № 9639 | N03 | E08 | 06 | 0050 | Beta | Oct 1, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9637 | S15 | E18 | 09 | 0220 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9636 | N14 | E13 | 24 | 0210 | Beta-Gamma | Oct 1, 2001 | Oct 8, 2001 | Oct 21, 2001 |
| № 9635 | N21 | W51 | 07 | 0040 | Beta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9634 | N12 | W02 | 09 | 0080 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 20, 2001 |
| № 9633 | N22 | W02 | 01 | 0070 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9632 | S18 | W33 | 15 | 0640 | Beta-Gamma-Delta | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9628 | S18 | W48 | 27 | 0620 | Beta-Gamma-Delta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9624 | N03 | W80 | 01 | 0060 | Alpha | Sep 24, 2001 | Oct 1, 2001 | Oct 14, 2001 |
| № 9621 | N15 | W84 | 01 | 0120 | Alpha | Sep 24, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9620 | N12 | W90 | 01 | 0030 | Alpha | Sep 23, 2001 | Sep 30, 2001 | Oct 14, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, September. Gray background - average solar cycle.
