No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 3, 1998. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8192 | S30 | W53 | 01 | 0020 | ALPHA | Mar 31, 1998 | Apr 7, 1998 | Apr 21, 1998 |
| № 8191 | S19 | E23 | 07 | 0030 | BETA | Apr 6, 1998 | Apr 12, 1998 | Apr 26, 1998 |
| № 8190 | S19 | E12 | 16 | 0130 | BETA-GAMMA | Apr 5, 1998 | Apr 12, 1998 | Apr 25, 1998 |
| № 8185 | S24 | W73 | 03 | 0290 | BETA | Mar 29, 1998 | Apr 5, 1998 | Apr 19, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to April 1998. The gray background is the average SSN index.
