Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 18, 2024. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3646 | N21 | E59 | 03 | 0030 | Beta | Apr 24, 2024 | Apr 30, 2024 | May 14, 2024 |
| № 3645 | S10 | E24 | 08 | 0030 | Beta-Gamma | Apr 21, 2024 | Apr 28, 2024 | May 11, 2024 |
| № 3644 | N12 | E60 | 02 | 0080 | Beta | Apr 24, 2024 | Apr 30, 2024 | May 14, 2024 |
| № 3643 | S13 | E34 | 20 | 0130 | Beta | Apr 22, 2024 | Apr 28, 2024 | May 12, 2024 |
| № 3641 | N12 | W28 | 03 | 0060 | Beta | Apr 17, 2024 | Apr 24, 2024 | May 7, 2024 |
| № 3639 | N29 | E22 | 16 | 0320 | Beta-Gamma-Delta | Apr 21, 2024 | Apr 28, 2024 | May 12, 2024 |
| № 3638 | S17 | E15 | 05 | 0030 | Beta | Apr 20, 2024 | Apr 27, 2024 | May 11, 2024 |
| № 3637 | S13 | E13 | 04 | 0020 | Beta | Apr 20, 2024 | Apr 27, 2024 | May 10, 2024 |
| № 3636 | S20 | W05 | 04 | 0070 | Beta | Apr 19, 2024 | Apr 26, 2024 | May 9, 2024 |
| № 3635 | N22 | W42 | 03 | 0010 | Alpha | Apr 16, 2024 | Apr 23, 2024 | May 7, 2024 |
| № 3634 | N27 | W70 | 08 | 0290 | Beta | Apr 14, 2024 | Apr 21, 2024 | May 5, 2024 |
| № 3633 | S07 | W78 | 03 | 0080 | Beta | Apr 13, 2024 | Apr 20, 2024 | May 3, 2024 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1995 to April 2024. The gray background is the average SSN index.
