Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 16, 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 | N15 | E78 | 02 | 0010 | Beta | May 23, 2001 | May 30, 2001 | Jun 12, 2001 |
| № 9460 | S24 | E50 | 01 | 0000 | Alpha | May 21, 2001 | May 28, 2001 | Jun 11, 2001 |
| № 9459 | N26 | W22 | 02 | 0010 | Beta | May 15, 2001 | May 22, 2001 | Jun 5, 2001 |
| № 9458 | S12 | W58 | 06 | 0040 | Beta | May 12, 2001 | May 19, 2001 | Jun 2, 2001 |
| № 9456 | N07 | W43 | 09 | 0050 | Beta | May 14, 2001 | May 20, 2001 | Jun 3, 2001 |
| № 9455 | S17 | W36 | 22 | 0180 | Beta-Gamma | May 14, 2001 | May 21, 2001 | Jun 4, 2001 |
| № 9454 | N12 | E07 | 23 | 0280 | Beta-Gamma | May 17, 2001 | May 24, 2001 | Jun 7, 2001 |
| № 9451 | S21 | W66 | 01 | 0120 | 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.
