Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2633 | N15 | W64 | 02 | 0010 | Beta | Jan 31, 2017 | Feb 7, 2017 | Feb 21, 2017 |
| № 2632 | N16 | W50 | 06 | 0030 | Beta | Feb 1, 2017 | Feb 8, 2017 | Feb 22, 2017 |
| № 2629 | N16 | W78 | 01 | 0040 | Alpha | Jan 30, 2017 | Feb 6, 2017 | Feb 20, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to February 2017. The gray background is the average SSN index.
