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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8363 | N26 | E49 | 05 | 0020 | BETA | Oct 21, 1998 | Oct 28, 1998 | Nov 11, 1998 |
| № 8362 | N20 | E75 | 01 | 0040 | ALPHA | Oct 23, 1998 | Oct 29, 1998 | Nov 12, 1998 |
| № 8361 | N14 | W08 | 03 | 0010 | BETA | Oct 16, 1998 | Oct 23, 1998 | Nov 6, 1998 |
| № 8360 | S19 | W23 | 14 | 0270 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8359 | N24 | W70 | 02 | 0010 | BETA | Oct 11, 1998 | Oct 18, 1998 | Nov 1, 1998 |
| № 8358 | N15 | W24 | 14 | 0080 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8355 | S21 | W41 | 04 | 0020 | 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.
