Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 25, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9637 | S14 | E73 | 03 | 0140 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 22, 2001 |
| № 9636 | N12 | E67 | 07 | 0260 | Beta | Oct 1, 2001 | Oct 8, 2001 | Oct 21, 2001 |
| № 9635 | N21 | E04 | 08 | 0040 | Beta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9634 | N12 | E56 | 05 | 0120 | Beta | Sep 30, 2001 | Oct 7, 2001 | Oct 20, 2001 |
| № 9633 | N22 | E52 | 01 | 0090 | Alpha | Sep 30, 2001 | Oct 7, 2001 | Oct 21, 2001 |
| № 9632 | S19 | E21 | 23 | 0790 | Beta-Gamma-Delta | Sep 27, 2001 | Oct 4, 2001 | Oct 18, 2001 |
| № 9631 | N08 | W67 | 01 | 0000 | Alpha | Sep 21, 2001 | Sep 28, 2001 | Oct 11, 2001 |
| № 9629 | N26 | W26 | 05 | 0040 | Beta | Sep 24, 2001 | Oct 1, 2001 | Oct 15, 2001 |
| № 9628 | S18 | E01 | 66 | 0880 | Beta-Gamma-Delta | Sep 26, 2001 | Oct 3, 2001 | Oct 17, 2001 |
| № 9627 | N01 | W09 | 16 | 0080 | Beta | Sep 25, 2001 | Oct 2, 2001 | Oct 15, 2001 |
| № 9624 | N03 | W24 | 01 | 0100 | Alpha | Sep 24, 2001 | Oct 1, 2001 | Oct 14, 2001 |
| № 9622 | N13 | W57 | 15 | 0270 | Beta | Sep 22, 2001 | Sep 28, 2001 | Oct 12, 2001 |
| № 9621 | N14 | W30 | 07 | 0210 | Beta | Sep 24, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9620 | N12 | W34 | 05 | 0080 | Beta | Sep 23, 2001 | Sep 30, 2001 | Oct 14, 2001 |
| № 9616 | S09 | W86 | 02 | 0060 | Beta | Sep 19, 2001 | Sep 26, 2001 | Oct 10, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to September 2001. The gray background is the average SSN index.
