Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 1, 2001. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 9642 | N04 | E56 | 01 | 0020 | Alpha | Oct 6, 2001 | Oct 13, 2001 | Oct 27, 2001 |
| № 9641 | S15 | E38 | 05 | 0150 | Beta | Oct 5, 2001 | Oct 12, 2001 | Oct 25, 2001 |
| № 9640 | N10 | E26 | 02 | 0020 | Beta | Oct 4, 2001 | Oct 11, 2001 | Oct 24, 2001 |
| № 9639 | N04 | W20 | 08 | 0100 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9637 | S13 | W07 | 19 | 0190 | Beta-Gamma | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9636 | N14 | W15 | 35 | 0350 | Beta-Gamma | Oct 1, 2001 | Oct 8, 2001 | Oct 21, 2001 |
| № 9635 | N22 | W78 | 03 | 0140 | Beta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9634 | N12 | W29 | 07 | 0070 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 20, 2001 |
| № 9633 | N22 | W29 | 01 | 0080 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9632 | S18 | W61 | 19 | 0620 | Beta-Gamma | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9628 | S17 | W76 | 20 | 0800 | Beta-Gamma | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to October 2001. The gray background is the average SSN index.
