Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 21, 2015. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2267 | N18 | E44 | 01 | 0030 | Alpha | Jan 25, 2015 | Feb 1, 2015 | Feb 15, 2015 |
| № 2266 | S06 | W18 | 14 | 0120 | Beta | Jan 21, 2015 | Jan 27, 2015 | Feb 10, 2015 |
| № 2265 | S21 | W24 | 01 | 0020 | Beta | Jan 20, 2015 | Jan 27, 2015 | Feb 10, 2015 |
| № 2259 | S15 | W89 | 01 | 0040 | Alpha | Jan 15, 2015 | Jan 22, 2015 | Feb 5, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to January 2015. The gray background is the average SSN index.
