Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9461 | N16 | E63 | 04 | 0090 | Beta | May 23, 2001 | May 30, 2001 | Jun 12, 2001 |
| № 9458 | S12 | W72 | 05 | 0030 | Beta | May 13, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9456 | N06 | W60 | 05 | 0090 | Beta | May 13, 2001 | May 20, 2001 | Jun 3, 2001 |
| № 9455 | S17 | W52 | 28 | 0140 | Beta-Gamma | May 14, 2001 | May 21, 2001 | Jun 4, 2001 |
| № 9454 | N13 | W08 | 22 | 0220 | Beta-Gamma | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
| № 9451 | S20 | W81 | 01 | 0110 | Alpha | May 12, 2001 | May 19, 2001 | Jun 1, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
