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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8366 | S16 | E37 | 01 | 0000 | ALPHA | Oct 23, 1998 | Oct 30, 1998 | Nov 12, 1998 |
| № 8365 | S28 | E12 | 03 | 0020 | BETA | Oct 21, 1998 | Oct 28, 1998 | Nov 11, 1998 |
| № 8364 | N19 | E15 | 05 | 0030 | BETA | Oct 21, 1998 | Oct 28, 1998 | Nov 11, 1998 |
| № 8363 | N25 | E07 | 11 | 0110 | BETA | Oct 20, 1998 | Oct 27, 1998 | Nov 10, 1998 |
| № 8362 | N19 | E35 | 01 | 0010 | ALPHA | Oct 23, 1998 | Oct 29, 1998 | Nov 12, 1998 |
| № 8361 | N15 | W49 | 09 | 0070 | BETA | Oct 16, 1998 | Oct 23, 1998 | Nov 6, 1998 |
| № 8360 | S19 | W62 | 05 | 0290 | BETA | Oct 15, 1998 | Oct 22, 1998 | Nov 5, 1998 |
| № 8358 | N15 | W67 | 10 | 0290 | BETA-GAMMA | Oct 15, 1998 | Oct 22, 1998 | Nov 4, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
