Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9568 | S19 | W48 | 01 | 0020 | Alpha | Aug 1, 2001 | Aug 8, 2001 | Aug 22, 2001 |
| № 9567 | S15 | W00 | 07 | 0050 | Beta | Aug 5, 2001 | Aug 12, 2001 | Aug 25, 2001 |
| № 9566 | N18 | E36 | 05 | 0020 | Beta | Aug 8, 2001 | Aug 14, 2001 | Aug 28, 2001 |
| № 9564 | N14 | W65 | 07 | 0060 | Beta | Jul 31, 2001 | Aug 7, 2001 | Aug 20, 2001 |
| № 9563 | N24 | E20 | 15 | 0100 | Beta | Aug 6, 2001 | Aug 13, 2001 | Aug 27, 2001 |
| № 9562 | N04 | E18 | 05 | 0060 | Beta | Aug 6, 2001 | Aug 13, 2001 | Aug 27, 2001 |
| № 9561 | S13 | E12 | 06 | 0040 | Beta | Aug 6, 2001 | Aug 13, 2001 | Aug 26, 2001 |
| № 9557 | S21 | W24 | 14 | 0050 | Beta | Aug 3, 2001 | Aug 10, 2001 | Aug 24, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to August 2001. The gray background is the average SSN index.
