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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8314 | N16 | E65 | 03 | 0020 | BETA | Aug 29, 1998 | Sep 5, 1998 | Sep 19, 1998 |
| № 8312 | N23 | W97 | 01 | 0000 | ALPHA | Aug 17, 1998 | Aug 24, 1998 | Sep 6, 1998 |
| № 8310 | N24 | E42 | 02 | 0010 | ALPHA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
| № 8309 | N16 | W15 | 08 | 0060 | BETA | Aug 23, 1998 | Aug 30, 1998 | Sep 13, 1998 |
| № 8308 | S22 | E16 | 01 | 0110 | ALPHA | Aug 25, 1998 | Sep 1, 1998 | Sep 15, 1998 |
| № 8307 | N31 | E32 | 12 | 0570 | BETA-DELTA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
| № 8304 | S26 | W26 | 05 | 0040 | BETA | Aug 22, 1998 | Aug 29, 1998 | Sep 12, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
