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) | |
|---|---|---|---|---|---|---|---|---|
| № 9634 | N12 | E76 | 04 | 0090 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 20, 2001 |
| № 9633 | N23 | E75 | 01 | 0090 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9632 | S18 | E45 | 20 | 0710 | Beta-Gamma | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9631 | N08 | W43 | 09 | 0050 | Beta | Sep 21, 2001 | Sep 28, 2001 | Oct 11, 2001 |
| № 9629 | N26 | W02 | 10 | 0040 | Beta | Sep 24, 2001 | Oct 1, 2001 | Oct 15, 2001 |
| № 9628 | S17 | E25 | 58 | 0630 | Beta-Gamma | Sep 26, 2001 | Oct 3, 2001 | Oct 16, 2001 |
| № 9627 | N02 | E17 | 05 | 0050 | Beta | Sep 25, 2001 | Oct 2, 2001 | Oct 16, 2001 |
| № 9626 | N25 | W14 | 04 | 0010 | Beta | Sep 23, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9624 | N02 | W00 | 01 | 0100 | Alpha | Sep 24, 2001 | Oct 1, 2001 | Oct 14, 2001 |
| № 9622 | N12 | W32 | 27 | 0300 | Beta | Sep 22, 2001 | Sep 28, 2001 | Oct 12, 2001 |
| № 9621 | N15 | W04 | 09 | 0180 | Beta | Sep 24, 2001 | Oct 1, 2001 | Oct 14, 2001 |
| № 9620 | N12 | W10 | 06 | 0110 | Beta | Sep 23, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9616 | S12 | W64 | 09 | 0160 | Beta-Gamma | Sep 19, 2001 | Sep 26, 2001 | Oct 10, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, September. Gray background - average solar cycle.
