Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9926 | N12 | E29 | 03 | 0060 | Beta | May 1, 2002 | May 8, 2002 | May 21, 2002 |
| № 9925 | S14 | W62 | 02 | 0010 | Beta | Apr 24, 2002 | May 1, 2002 | May 15, 2002 |
| № 9924 | S15 | W48 | 01 | 0010 | Alpha | Apr 25, 2002 | May 2, 2002 | May 16, 2002 |
| № 9923 | S03 | W69 | 04 | 0020 | Beta | Apr 24, 2002 | Apr 30, 2002 | May 14, 2002 |
| № 9922 | N22 | E07 | 01 | 0020 | Alpha | Apr 29, 2002 | May 6, 2002 | May 20, 2002 |
| № 9921 | N13 | W10 | 05 | 0030 | Beta | Apr 28, 2002 | May 5, 2002 | May 18, 2002 |
| № 9920 | S20 | W49 | 02 | 0010 | Beta | Apr 25, 2002 | May 2, 2002 | May 16, 2002 |
| № 9919 | N12 | E17 | 03 | 0110 | Beta | Apr 30, 2002 | May 7, 2002 | May 20, 2002 |
| № 9916 | S18 | W03 | 06 | 0020 | Beta | Apr 29, 2002 | May 5, 2002 | May 19, 2002 |
| № 9915 | N11 | W23 | 15 | 0280 | Beta | Apr 27, 2002 | May 4, 2002 | May 17, 2002 |
| № 9914 | N05 | W35 | 09 | 0220 | Beta | Apr 26, 2002 | May 3, 2002 | May 16, 2002 |
| № 9912 | N11 | W87 | 02 | 0090 | Alpha | Apr 22, 2002 | Apr 29, 2002 | May 13, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to April 2002. The gray background is the average SSN index.
