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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8356 | N21 | W02 | 12 | 0030 | BETA | Oct 10, 1998 | Oct 17, 1998 | Oct 30, 1998 |
| № 8355 | S22 | E53 | 10 | 0220 | BETA-DELTA | Oct 14, 1998 | Oct 21, 1998 | Nov 4, 1998 |
| № 8354 | S18 | W12 | 08 | 0020 | BETA | Oct 9, 1998 | Oct 16, 1998 | Oct 30, 1998 |
| № 8353 | N20 | E44 | 03 | 0010 | BETA | Oct 13, 1998 | Oct 20, 1998 | Nov 3, 1998 |
| № 8350 | N18 | W10 | 35 | 0150 | BETA | Oct 9, 1998 | Oct 16, 1998 | Oct 30, 1998 |
| № 8349 | S25 | W67 | 04 | 0010 | BETA | Oct 5, 1998 | Oct 12, 1998 | Oct 26, 1998 |
| № 8348 | N17 | W70 | 04 | 0010 | BETA | Oct 5, 1998 | Oct 11, 1998 | Oct 25, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
