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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 25, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8167 | S27 | E19 | 05 | 0010 | BETA | Feb 27, 1998 | Mar 6, 1998 | Mar 20, 1998 |
| № 8166 | N22 | W23 | 01 | 0000 | ALPHA | Feb 24, 1998 | Mar 3, 1998 | Mar 17, 1998 |
| № 8165 | N28 | E41 | 02 | 0010 | BETA | Mar 1, 1998 | Mar 8, 1998 | Mar 22, 1998 |
| № 8164 | N16 | E03 | 16 | 0070 | BETA | Feb 26, 1998 | Mar 5, 1998 | Mar 19, 1998 |
| № 8163 | S23 | W54 | 04 | 0020 | BETA | Feb 22, 1998 | Mar 1, 1998 | Mar 14, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to February 1998. The gray background is the average SSN index.
