Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 8, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2679 | N14 | W25 | 04 | 0010 | Beta | Sep 7, 2017 | Sep 14, 2017 | Sep 27, 2017 |
| № 2678 | N11 | E20 | 03 | 0040 | Alpha | Sep 10, 2017 | Sep 17, 2017 | Oct 1, 2017 |
| № 2677 | N17 | E14 | 03 | 0010 | Beta | Sep 10, 2017 | Sep 17, 2017 | Sep 30, 2017 |
| № 2674 | N14 | W39 | 13 | 0600 | Beta | Sep 6, 2017 | Sep 13, 2017 | Sep 26, 2017 |
| № 2673 | S09 | W56 | 21 | 1000 | Beta-Gamma-Delta | Sep 5, 2017 | Sep 11, 2017 | Sep 25, 2017 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1988 to September 2017. The gray background is the average SSN index.
