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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 13, 2003. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 285 | S11 | E25 | 02 | 0050 | Beta | Feb 16, 2003 | Feb 23, 2003 | Mar 8, 2003 |
| № 283 | N00 | W13 | 05 | 0020 | Beta | Feb 13, 2003 | Feb 20, 2003 | Mar 5, 2003 |
| № 282 | N10 | W32 | 09 | 0040 | Beta | Feb 12, 2003 | Feb 18, 2003 | Mar 4, 2003 |
| № 281 | S15 | W06 | 01 | 0020 | Alpha | Feb 14, 2003 | Feb 20, 2003 | Mar 6, 2003 |
| № 280 | S06 | W55 | 05 | 0020 | Beta | Feb 10, 2003 | Feb 17, 2003 | Mar 2, 2003 |
| № 278 | N18 | W29 | 02 | 0020 | Alpha | Feb 12, 2003 | Feb 19, 2003 | Mar 4, 2003 |
| № 277 | S18 | W34 | 09 | 0030 | Beta | Feb 11, 2003 | Feb 18, 2003 | Mar 4, 2003 |
| № 276 | S14 | W64 | 06 | 0060 | Beta | Feb 9, 2003 | Feb 16, 2003 | Mar 2, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to February 2003. The gray background is the average SSN index.
