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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 14, 1999. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8465 | S33 | W60 | 02 | 0000 | BETA | Feb 10, 1999 | Feb 17, 1999 | Mar 4, 1999 |
| № 8464 | N21 | E55 | 04 | 0160 | BETA | Feb 19, 1999 | Feb 26, 1999 | Mar 12, 1999 |
| № 8463 | S15 | E45 | 01 | 0070 | ALPHA | Feb 18, 1999 | Feb 25, 1999 | Mar 11, 1999 |
| № 8462 | N21 | E21 | 16 | 0050 | BETA | Feb 17, 1999 | Feb 24, 1999 | Mar 9, 1999 |
| № 8461 | S31 | E10 | 02 | 0000 | BETA | Feb 16, 1999 | Feb 23, 1999 | Mar 9, 1999 |
| № 8460 | S16 | E30 | 04 | 0030 | ALPHA | Feb 17, 1999 | Feb 24, 1999 | Mar 10, 1999 |
| № 8458 | S22 | E16 | 16 | 0560 | BETA-GAMMA | Feb 16, 1999 | Feb 23, 1999 | Mar 9, 1999 |
| № 8457 | N15 | E10 | 36 | 0660 | BETA-GAMMA | Feb 16, 1999 | Feb 23, 1999 | Mar 8, 1999 |
| № 8456 | N23 | W09 | 28 | 0060 | BETA | Feb 14, 1999 | Feb 21, 1999 | Mar 7, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to February 1999. The gray background is the average SSN index.
