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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 260 | N14 | E65 | 01 | 0070 | Alpha | Jan 23, 2003 | Jan 30, 2003 | Feb 12, 2003 |
| № 259 | N10 | E41 | 07 | 0040 | Beta | Jan 21, 2003 | Jan 28, 2003 | Feb 10, 2003 |
| № 258 | N08 | E27 | 02 | 0070 | Alpha | Jan 20, 2003 | Jan 27, 2003 | Feb 9, 2003 |
| № 257 | N15 | W19 | 01 | 0010 | Alpha | Jan 17, 2003 | Jan 23, 2003 | Feb 6, 2003 |
| № 256 | S16 | E03 | 02 | 0040 | Alpha | Jan 18, 2003 | Jan 25, 2003 | Feb 8, 2003 |
| № 255 | S13 | W39 | 07 | 0150 | Beta | Jan 15, 2003 | Jan 22, 2003 | Feb 4, 2003 |
| № 254 | S14 | W11 | 01 | 0090 | Alpha | Jan 17, 2003 | Jan 24, 2003 | Feb 7, 2003 |
| № 251 | S15 | W28 | 07 | 0040 | Beta | Jan 16, 2003 | Jan 23, 2003 | Feb 5, 2003 |
| № 250 | S27 | W36 | 04 | 0130 | Beta | Jan 15, 2003 | Jan 22, 2003 | Feb 5, 2003 |
| № 247 | S15 | W64 | 03 | 0050 | Beta | Jan 13, 2003 | Jan 20, 2003 | Feb 3, 2003 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1974 to January 2003. The gray background is the average SSN index.
