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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 29, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9559 | S24 | E02 | 08 | 0030 | Beta | Jul 30, 2001 | Aug 6, 2001 | Aug 20, 2001 |
| № 9557 | S20 | E50 | 04 | 0090 | Beta | Aug 3, 2001 | Aug 10, 2001 | Aug 23, 2001 |
| № 9555 | S09 | E03 | 01 | 0000 | Alpha | Jul 30, 2001 | Aug 6, 2001 | Aug 19, 2001 |
| № 9553 | N13 | W31 | 13 | 0030 | Beta | Jul 28, 2001 | Aug 3, 2001 | Aug 17, 2001 |
| № 9548 | N17 | W82 | 01 | 0060 | Alpha | Jul 24, 2001 | Jul 30, 2001 | Aug 13, 2001 |
| № 9543 | S23 | W87 | 01 | 0060 | Alpha | Jul 23, 2001 | Jul 30, 2001 | Aug 13, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to July 2001. The gray background is the average SSN index.
