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) | |
|---|---|---|---|---|---|---|---|---|
| № 9638 | N03 | E61 | 02 | 0030 | Alpha | Oct 2, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9637 | S15 | E59 | 05 | 0180 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9636 | N13 | E54 | 17 | 0300 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9635 | N21 | W12 | 13 | 0050 | Beta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9634 | N12 | E41 | 11 | 0080 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9633 | N22 | E36 | 01 | 0070 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9632 | S19 | E06 | 23 | 0700 | Beta-Gamma-Delta | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9631 | N09 | W85 | 01 | 0000 | Alpha | Sep 21, 2001 | Sep 27, 2001 | Oct 11, 2001 |
| № 9629 | N26 | W42 | 02 | 0000 | Beta | Sep 24, 2001 | Oct 1, 2001 | Oct 15, 2001 |
| № 9628 | S18 | W14 | 66 | 0880 | Beta-Gamma-Delta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9627 | N01 | W24 | 16 | 0060 | Beta | Sep 25, 2001 | Oct 2, 2001 | Oct 15, 2001 |
| № 9624 | N03 | W40 | 01 | 0090 | Alpha | Sep 24, 2001 | Oct 1, 2001 | Oct 14, 2001 |
| № 9622 | N13 | W73 | 06 | 0200 | Beta | Sep 21, 2001 | Sep 28, 2001 | Oct 12, 2001 |
| № 9621 | N14 | W45 | 04 | 0150 | Beta | Sep 24, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9620 | N12 | W50 | 02 | 0070 | 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.
