Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 2002. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9963 | N17 | E75 | 01 | 0120 | Alpha | May 28, 2002 | Jun 4, 2002 | Jun 17, 2002 |
| № 9962 | N15 | E59 | 01 | 0020 | Alpha | May 26, 2002 | Jun 2, 2002 | Jun 16, 2002 |
| № 9961 | S22 | E62 | 14 | 0480 | Beta-Gamma | May 27, 2002 | Jun 3, 2002 | Jun 17, 2002 |
| № 9960 | N14 | E46 | 06 | 0140 | Beta | May 25, 2002 | Jun 1, 2002 | Jun 15, 2002 |
| № 9958 | N04 | E09 | 02 | 0090 | Alpha | May 23, 2002 | May 29, 2002 | Jun 12, 2002 |
| № 9957 | N09 | E22 | 37 | 0830 | Beta-Gamma-Delta | May 24, 2002 | May 30, 2002 | Jun 13, 2002 |
| № 9955 | S15 | E02 | 01 | 0020 | Alpha | May 22, 2002 | May 29, 2002 | Jun 12, 2002 |
| № 9954 | S20 | E01 | 06 | 0110 | Beta | May 22, 2002 | May 29, 2002 | Jun 12, 2002 |
| № 9950 | S04 | W77 | 01 | 0010 | Alpha | May 16, 2002 | May 23, 2002 | Jun 6, 2002 |
| № 9948 | S21 | W57 | 02 | 0320 | Alpha | May 18, 2002 | May 25, 2002 | Jun 7, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to May 2002. The gray background is the average SSN index.
