Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 1, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2647 | N11 | E01 | 02 | 0010 | Beta | Apr 2, 2017 | Apr 9, 2017 | Apr 22, 2017 |
| № 2645 | S10 | E01 | 29 | 0380 | Beta-Gamma | Apr 2, 2017 | Apr 9, 2017 | Apr 22, 2017 |
| № 2644 | N12 | W37 | 04 | 0190 | Beta | Mar 30, 2017 | Apr 6, 2017 | Apr 20, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to April 2017. The gray background is the average SSN index.
