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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 22, 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 | N17 | E79 | 01 | 0010 | ALPHA | Aug 29, 1998 | Sep 5, 1998 | Sep 18, 1998 |
| № 8313 | S18 | E45 | 01 | 0000 | ALPHA | Aug 26, 1998 | Sep 2, 1998 | Sep 16, 1998 |
| № 8312 | N23 | W75 | 01 | 0000 | ALPHA | Aug 17, 1998 | Aug 24, 1998 | Sep 7, 1998 |
| № 8310 | N22 | E58 | 02 | 0030 | BETA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
| № 8309 | N16 | E04 | 08 | 0050 | BETA | Aug 23, 1998 | Aug 30, 1998 | Sep 13, 1998 |
| № 8308 | S21 | E35 | 02 | 0110 | ALPHA | Aug 26, 1998 | Sep 1, 1998 | Sep 15, 1998 |
| № 8307 | N31 | E49 | 11 | 0510 | BETA | Aug 27, 1998 | Sep 3, 1998 | Sep 17, 1998 |
| № 8306 | N28 | E07 | 05 | 0010 | BETA | Aug 23, 1998 | Aug 30, 1998 | Sep 13, 1998 |
| № 8304 | S28 | W09 | 04 | 0050 | BETA | Aug 22, 1998 | Aug 29, 1998 | Sep 12, 1998 |
| № 8301 | S20 | W81 | 03 | 0050 | BETA | Aug 17, 1998 | Aug 24, 1998 | Sep 6, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to August 1998. The gray background is the average SSN index.
