Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 55 | N14 | E66 | 04 | 0040 | Beta | Aug 6, 2002 | Aug 13, 2002 | Aug 26, 2002 |
| № 54 | S22 | E44 | 04 | 0030 | Beta | Aug 4, 2002 | Aug 11, 2002 | Aug 25, 2002 |
| № 53 | S17 | W00 | 02 | 0020 | Beta | Aug 1, 2002 | Aug 8, 2002 | Aug 21, 2002 |
| № 51 | S16 | E30 | 01 | 0090 | Alpha | Aug 3, 2002 | Aug 10, 2002 | Aug 24, 2002 |
| № 50 | S08 | W17 | 37 | 0540 | Beta-Gamma | Jul 31, 2002 | Aug 6, 2002 | Aug 20, 2002 |
| № 48 | N21 | E02 | 08 | 0040 | Beta | Aug 1, 2002 | Aug 8, 2002 | Aug 22, 2002 |
| № 44 | S20 | W31 | 54 | 0380 | Beta-Gamma | Jul 29, 2002 | Aug 5, 2002 | Aug 19, 2002 |
| № 43 | N12 | W37 | 23 | 0100 | Beta | Jul 29, 2002 | Aug 5, 2002 | Aug 18, 2002 |
| № 42 | S22 | W62 | 01 | 0000 | Alpha | Jul 27, 2002 | Aug 3, 2002 | Aug 17, 2002 |
| № 39 | S14 | W28 | 63 | 0620 | Beta-Gamma-Delta | Jul 30, 2002 | Aug 6, 2002 | Aug 19, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to July 2002. The gray background is the average SSN index.
