Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 8, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9613 | S17 | W52 | 03 | 0020 | Beta | Sep 5, 2001 | Sep 12, 2001 | Sep 26, 2001 |
| № 9612 | N22 | E40 | 03 | 0050 | Beta | Sep 12, 2001 | Sep 19, 2001 | Oct 3, 2001 |
| № 9611 | N10 | W23 | 07 | 0030 | Beta | Sep 7, 2001 | Sep 14, 2001 | Sep 28, 2001 |
| № 9610 | S13 | E60 | 11 | 0280 | Beta | Sep 14, 2001 | Sep 20, 2001 | Oct 4, 2001 |
| № 9609 | S06 | W67 | 03 | 0030 | Beta | Sep 4, 2001 | Sep 11, 2001 | Sep 24, 2001 |
| № 9608 | S26 | E45 | 35 | 0850 | Beta-Gamma | Sep 12, 2001 | Sep 19, 2001 | Oct 3, 2001 |
| № 9607 | S16 | E29 | 31 | 0180 | Beta | Sep 11, 2001 | Sep 18, 2001 | Oct 2, 2001 |
| № 9606 | S18 | E05 | 33 | 0270 | Beta-Gamma | Sep 9, 2001 | Sep 16, 2001 | Sep 30, 2001 |
| № 9605 | S19 | W02 | 16 | 0120 | Beta | Sep 9, 2001 | Sep 16, 2001 | Sep 29, 2001 |
| № 9603 | S08 | W03 | 01 | 0010 | Alpha | Sep 9, 2001 | Sep 16, 2001 | Sep 29, 2001 |
| № 9601 | N13 | W64 | 24 | 0730 | Beta-Gamma-Delta | Sep 4, 2001 | Sep 11, 2001 | Sep 25, 2001 |
| № 9596 | N22 | W91 | 01 | 0090 | Alpha | Sep 2, 2001 | Sep 9, 2001 | Sep 23, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to September 2001. The gray background is the average SSN index.
