Sunspots and active regions — January 21, 2007
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 939 | S03 | W17 | 08 | 0100 | Beta | Jan 21, 2007 | Jan 27, 2007 | Feb 10, 2007 |
| № 938 | N04 | W27 | 03 | 0020 | Alpha | Jan 20, 2007 | Jan 27, 2007 | Feb 9, 2007 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1978, January to 2007, January. Gray background - average solar cycle.
