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) | |
|---|---|---|---|---|---|---|---|---|
| № 9665 | S26 | W57 | 03 | 0010 | Beta | Oct 11, 2001 | Oct 18, 2001 | Nov 1, 2001 |
| № 9663 | S15 | E37 | 01 | 0020 | Alpha | Oct 18, 2001 | Oct 25, 2001 | Nov 7, 2001 |
| № 9662 | N09 | E15 | 11 | 0070 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 5, 2001 |
| № 9661 | N15 | E42 | 16 | 0720 | Beta-Delta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9660 | N13 | W21 | 05 | 0020 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9658 | S15 | E18 | 16 | 0190 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9657 | N22 | E04 | 01 | 0010 | Alpha | Oct 15, 2001 | Oct 22, 2001 | Nov 5, 2001 |
| № 9655 | S22 | W26 | 04 | 0030 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9653 | S22 | W40 | 07 | 0060 | Beta | Oct 12, 2001 | Oct 19, 2001 | Nov 2, 2001 |
| № 9650 | S17 | W56 | 02 | 0010 | Beta | Oct 11, 2001 | Oct 18, 2001 | Oct 31, 2001 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1972, January to 2001, October. Gray background - average solar cycle.
