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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8156 | S24 | E68 | 03 | 0020 | BETA | Feb 17, 1998 | Feb 24, 1998 | Mar 10, 1998 |
| № 8155 | S14 | E02 | 04 | 0020 | BETA | Feb 12, 1998 | Feb 19, 1998 | Mar 5, 1998 |
| № 8154 | S24 | E12 | 01 | 0000 | ALPHA | Feb 13, 1998 | Feb 20, 1998 | Mar 6, 1998 |
| № 8153 | S39 | E13 | 03 | 0020 | BETA | Feb 13, 1998 | Feb 21, 1998 | Mar 7, 1998 |
| № 8151 | S24 | W17 | 01 | 0050 | ALPHA | Feb 11, 1998 | Feb 18, 1998 | Mar 4, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to February 1998. The gray background is the average SSN index.
