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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 12, 1998. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8301 | S22 | E50 | 03 | 0190 | BETA | Aug 17, 1998 | Aug 24, 1998 | Sep 6, 1998 |
| № 8300 | S28 | W27 | 06 | 0020 | BETA | Aug 11, 1998 | Aug 18, 1998 | Sep 1, 1998 |
| № 8299 | N15 | E28 | 13 | 0460 | BETA | Aug 15, 1998 | Aug 22, 1998 | Sep 4, 1998 |
| № 8298 | N20 | W36 | 15 | 0060 | BETA | Aug 10, 1998 | Aug 17, 1998 | Aug 31, 1998 |
| № 8297 | N28 | E14 | 09 | 0400 | BETA | Aug 14, 1998 | Aug 21, 1998 | Sep 4, 1998 |
| № 8293 | S22 | W42 | 38 | 0420 | BETA-GAMMA | Aug 10, 1998 | Aug 17, 1998 | Aug 30, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
