Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 18, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 723 | N06 | E77 | 01 | 0070 | Alpha | Jan 25, 2005 | Feb 1, 2005 | Feb 14, 2005 |
| № 721 | S03 | E02 | 01 | 0000 | Alpha | Jan 19, 2005 | Jan 26, 2005 | Feb 8, 2005 |
| № 720 | N13 | W30 | 48 | 1460 | Beta-Delta | Jan 17, 2005 | Jan 24, 2005 | Feb 6, 2005 |
| № 718 | S07 | W47 | 17 | 0240 | Beta | Jan 15, 2005 | Jan 22, 2005 | Feb 5, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to January 2005. The gray background is the average SSN index.
