Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9465 | S08 | E63 | 04 | 0110 | Beta | May 27, 2001 | Jun 3, 2001 | Jun 16, 2001 |
| № 9464 | S07 | E53 | 04 | 0070 | Beta | May 26, 2001 | Jun 2, 2001 | Jun 15, 2001 |
| № 9463 | N09 | E46 | 14 | 0400 | Beta | May 25, 2001 | Jun 1, 2001 | Jun 15, 2001 |
| № 9462 | N20 | E36 | 01 | 0060 | Alpha | May 25, 2001 | Jun 1, 2001 | Jun 14, 2001 |
| № 9461 | N22 | E10 | 12 | 0130 | Beta | May 23, 2001 | May 30, 2001 | Jun 13, 2001 |
| № 9454 | N15 | W60 | 04 | 0030 | Alpha | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
