Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 4, 2019. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2733 | N04 | W141 | 02 | 0090 | Beta | Jan 25, 2019 | Feb 1, 2019 | Feb 15, 2019 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1990 to February 2019. The gray background is the average SSN index.
