No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 1997. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8036 | S18 | W50 | 07 | 0030 | BETA | Apr 25, 1997 | May 2, 1997 | May 16, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to April 1997. The gray background is the average SSN index.
