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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 27, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8370 | S28 | W74 | 02 | 0010 | ALPHA | Oct 22, 1998 | Oct 29, 1998 | Nov 12, 1998 |
| № 8369 | N17 | E47 | 06 | 0070 | BETA | Oct 31, 1998 | Nov 7, 1998 | Nov 21, 1998 |
| № 8367 | N17 | W62 | 01 | 0000 | ALPHA | Oct 23, 1998 | Oct 30, 1998 | Nov 13, 1998 |
| № 8366 | S09 | W64 | 01 | 0010 | ALPHA | Oct 23, 1998 | Oct 30, 1998 | Nov 12, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to October 1998. The gray background is the average SSN index.
