Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9592 | S09 | W62 | 03 | 0020 | Beta | Aug 20, 2001 | Aug 26, 2001 | Sep 9, 2001 |
| № 9591 | S17 | E60 | 08 | 0280 | Beta | Aug 29, 2001 | Sep 5, 2001 | Sep 18, 2001 |
| № 9590 | S28 | E47 | 02 | 0210 | Alpha | Aug 28, 2001 | Sep 4, 2001 | Sep 18, 2001 |
| № 9589 | N16 | W49 | 09 | 0050 | Beta | Aug 21, 2001 | Aug 27, 2001 | Sep 10, 2001 |
| № 9587 | S10 | W17 | 01 | 0000 | Alpha | Aug 23, 2001 | Aug 30, 2001 | Sep 12, 2001 |
| № 9585 | N14 | W07 | 35 | 0290 | Beta | Aug 24, 2001 | Aug 31, 2001 | Sep 13, 2001 |
| № 9584 | S12 | W27 | 01 | 0000 | Alpha | Aug 22, 2001 | Aug 29, 2001 | Sep 12, 2001 |
| № 9582 | N27 | W23 | 22 | 0120 | Beta | Aug 22, 2001 | Aug 29, 2001 | Sep 12, 2001 |
| № 9580 | N24 | W33 | 01 | 0090 | Alpha | Aug 22, 2001 | Aug 29, 2001 | Sep 12, 2001 |
| № 9575 | N10 | W76 | 01 | 0130 | Alpha | Aug 18, 2001 | Aug 25, 2001 | Sep 8, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to August 2001. The gray background is the average SSN index.
