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) | |
|---|---|---|---|---|---|---|---|---|
| № 9663 | S13 | E68 | 01 | 0020 | Alpha | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9662 | N09 | E43 | 05 | 0020 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9661 | N16 | E70 | 05 | 0480 | Beta-Delta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9660 | N12 | E09 | 10 | 0030 | Beta | Oct 14, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9659 | N03 | E05 | 02 | 0010 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9658 | S15 | E45 | 09 | 0190 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9657 | N19 | E24 | 07 | 0030 | Beta | Oct 15, 2001 | Oct 22, 2001 | Nov 4, 2001 |
| № 9655 | S22 | E01 | 05 | 0090 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9653 | S22 | W13 | 15 | 0150 | Beta | Oct 12, 2001 | Oct 19, 2001 | Nov 2, 2001 |
| № 9650 | S16 | W33 | 04 | 0020 | Beta | Oct 10, 2001 | Oct 17, 2001 | Oct 31, 2001 |
| № 9648 | S07 | W47 | 01 | 0010 | Alpha | Oct 9, 2001 | Oct 16, 2001 | Oct 30, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, October. Gray background - average solar cycle.
