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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 3, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8325 | S28 | E47 | 01 | 0000 | ALPHA | Sep 8, 1998 | Sep 15, 1998 | Sep 29, 1998 |
| № 8323 | S22 | E16 | 43 | 1430 | BETA-GAMMA-DELTA | Sep 5, 1998 | Sep 12, 1998 | Sep 26, 1998 |
| № 8322 | N22 | W66 | 06 | 0090 | BETA | Aug 30, 1998 | Sep 6, 1998 | Sep 20, 1998 |
| № 8321 | N32 | W01 | 03 | 0020 | BETA | Sep 4, 1998 | Sep 11, 1998 | Sep 25, 1998 |
| № 8319 | N19 | W81 | 13 | 0710 | BETA | Aug 29, 1998 | Sep 5, 1998 | Sep 18, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to September 1998. The gray background is the average SSN index.
