Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9460 | S24 | E56 | 01 | 0000 | Alpha | May 21, 2001 | May 28, 2001 | Jun 10, 2001 |
| № 9459 | N26 | W13 | 02 | 0020 | Beta | May 15, 2001 | May 22, 2001 | Jun 5, 2001 |
| № 9458 | S11 | W49 | 03 | 0020 | Beta | May 13, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9457 | S21 | W11 | 01 | 0000 | Alpha | May 15, 2001 | May 22, 2001 | Jun 5, 2001 |
| № 9456 | N06 | W36 | 07 | 0060 | Beta | May 14, 2001 | May 20, 2001 | Jun 3, 2001 |
| № 9455 | S17 | W28 | 29 | 0180 | Beta-Gamma | May 14, 2001 | May 21, 2001 | Jun 4, 2001 |
| № 9454 | N12 | E14 | 21 | 0320 | Beta-Gamma | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
| № 9451 | S22 | W56 | 05 | 0120 | Beta | May 12, 2001 | May 19, 2001 | Jun 2, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to May 2001. The gray background is the average SSN index.
