Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2278 | S08 | E10 | 05 | 0010 | Beta | Feb 2, 2015 | Feb 9, 2015 | Feb 22, 2015 |
| № 2277 | N08 | E47 | 41 | 0510 | Beta-Gamma | Feb 5, 2015 | Feb 11, 2015 | Feb 25, 2015 |
| № 2276 | S07 | W01 | 03 | 0010 | Beta | Feb 1, 2015 | Feb 8, 2015 | Feb 21, 2015 |
| № 2275 | S17 | W67 | 07 | 0140 | Beta | Jan 27, 2015 | Feb 3, 2015 | Feb 16, 2015 |
| № 2273 | S03 | W55 | 05 | 0030 | Beta | Jan 28, 2015 | Feb 4, 2015 | Feb 17, 2015 |
| № 2272 | N12 | E05 | 01 | 0020 | Alpha | Feb 1, 2015 | Feb 8, 2015 | Feb 22, 2015 |
| № 2271 | N17 | W58 | 13 | 0230 | Beta-Gamma | Jan 28, 2015 | Feb 3, 2015 | Feb 17, 2015 |
| № 2268 | S10 | W31 | 38 | 0500 | Beta-Gamma | Jan 30, 2015 | Feb 5, 2015 | Feb 19, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to January 2015. The gray background is the average SSN index.
