Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2641 | N15 | E46 | 05 | 0040 | Beta | Mar 4, 2017 | Mar 11, 2017 | Mar 25, 2017 |
| № 2640 | N09 | E11 | 04 | 0020 | Beta | Mar 2, 2017 | Mar 9, 2017 | Mar 22, 2017 |
| № 2638 | N16 | W29 | 01 | 0090 | Alpha | Feb 27, 2017 | Mar 6, 2017 | Mar 19, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to February 2017. The gray background is the average SSN index.
