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) | |
|---|---|---|---|---|---|---|---|---|
| № 9646 | N12 | E42 | 03 | 0030 | Beta | Oct 6, 2001 | Oct 13, 2001 | Oct 27, 2001 |
| № 9645 | S18 | E03 | 12 | 0060 | Beta | Oct 3, 2001 | Oct 10, 2001 | Oct 24, 2001 |
| № 9644 | N20 | W04 | 04 | 0030 | Beta | Oct 3, 2001 | Oct 10, 2001 | Oct 23, 2001 |
| № 9643 | S26 | W26 | 03 | 0030 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9642 | N06 | E43 | 02 | 0060 | Alpha | Oct 6, 2001 | Oct 13, 2001 | Oct 27, 2001 |
| № 9641 | S13 | E23 | 09 | 0220 | Beta | Oct 5, 2001 | Oct 12, 2001 | Oct 25, 2001 |
| № 9640 | N11 | E12 | 03 | 0040 | Beta | Oct 4, 2001 | Oct 11, 2001 | Oct 24, 2001 |
| № 9639 | N04 | W37 | 04 | 0060 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9637 | S20 | W19 | 15 | 0120 | Beta | Oct 2, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9636 | N13 | W27 | 34 | 0310 | Beta-Gamma | Oct 1, 2001 | Oct 8, 2001 | Oct 21, 2001 |
| № 9635 | N20 | W90 | 04 | 0090 | Beta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9634 | N11 | W38 | 10 | 0070 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9633 | N22 | W43 | 01 | 0070 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 20, 2001 |
| № 9632 | S21 | W73 | 20 | 0620 | Beta-Gamma | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9628 | S22 | W91 | 15 | 0350 | Beta-Gamma | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, October. Gray background - average solar cycle.
