Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 21, 2017. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2628 | N12 | E49 | 04 | 0020 | Beta | Jan 26, 2017 | Feb 2, 2017 | Feb 15, 2017 |
| № 2627 | N05 | E28 | 12 | 0070 | Beta | Jan 24, 2017 | Jan 31, 2017 | Feb 13, 2017 |
| № 2626 | N08 | W24 | 03 | 0050 | Alpha | Jan 20, 2017 | Jan 27, 2017 | Feb 10, 2017 |
| № 2625 | N00 | W35 | 02 | 0040 | Alpha | Jan 19, 2017 | Jan 26, 2017 | Feb 9, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to January 2017. The gray background is the average SSN index.
