Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 2023. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3421 | N15 | E16 | 05 | 0020 | Beta | Sep 6, 2023 | Sep 13, 2023 | Sep 27, 2023 |
| № 3420 | S20 | E18 | 04 | 0030 | Beta | Sep 6, 2023 | Sep 13, 2023 | Sep 27, 2023 |
| № 3419 | N24 | W49 | 03 | 0010 | Beta | Sep 1, 2023 | Sep 8, 2023 | Sep 22, 2023 |
| № 3418 | N21 | E12 | 01 | 0010 | Alpha | Sep 6, 2023 | Sep 13, 2023 | Sep 26, 2023 |
| № 3417 | S08 | W06 | 04 | 0040 | Beta | Sep 4, 2023 | Sep 11, 2023 | Sep 25, 2023 |
| № 3415 | S09 | W81 | 02 | 0120 | Beta | Aug 30, 2023 | Sep 6, 2023 | Sep 19, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to September 2023. The gray background is the average SSN index.
