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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8360 | S19 | W16 | 10 | 0100 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8359 | N23 | W63 | 02 | 0030 | BETA | Oct 11, 1998 | Oct 18, 1998 | Nov 1, 1998 |
| № 8358 | N15 | W16 | 13 | 0110 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8355 | S21 | W33 | 10 | 0080 | BETA | Oct 14, 1998 | Oct 21, 1998 | Nov 3, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
