No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8286 | N18 | E54 | 03 | 0000 | BETA | Aug 2, 1998 | Aug 9, 1998 | Aug 23, 1998 |
| № 8285 | S23 | E18 | 01 | 0000 | ALPHA | Jul 30, 1998 | Aug 6, 1998 | Aug 20, 1998 |
| № 8284 | N27 | W24 | 04 | 0000 | BETA | Jul 27, 1998 | Aug 3, 1998 | Aug 17, 1998 |
| № 8283 | N27 | E68 | 01 | 0040 | ALPHA | Aug 3, 1998 | Aug 10, 1998 | Aug 24, 1998 |
| № 8282 | N32 | E04 | 16 | 0530 | BETA-DELTA | Jul 29, 1998 | Aug 5, 1998 | Aug 20, 1998 |
| № 8280 | S24 | E02 | 10 | 0380 | BETA | Jul 29, 1998 | Aug 5, 1998 | Aug 19, 1998 |
| № 8279 | N23 | W50 | 04 | 0010 | ALPHA | Jul 25, 1998 | Aug 1, 1998 | Aug 15, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to July 1998. The gray background is the average SSN index.
