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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8282 | N33 | E67 | 03 | 0010 | BETA | Jul 29, 1998 | Aug 6, 1998 | Aug 20, 1998 |
| № 8281 | N17 | E59 | 07 | 0030 | BETA | Jul 28, 1998 | Aug 4, 1998 | Aug 18, 1998 |
| № 8280 | S21 | E63 | 08 | 0340 | BETA | Jul 29, 1998 | Aug 5, 1998 | Aug 19, 1998 |
| № 8279 | N27 | E20 | 06 | 0030 | BETA | Jul 26, 1998 | Aug 2, 1998 | Aug 16, 1998 |
| № 8278 | S27 | E26 | 05 | 0020 | BETA | Jul 26, 1998 | Aug 2, 1998 | Aug 16, 1998 |
| № 8277 | S14 | W54 | 09 | 0110 | BETA | Jul 20, 1998 | Jul 27, 1998 | Aug 9, 1998 |
| № 8276 | S21 | E19 | 01 | 0000 | ALPHA | Jul 25, 1998 | Aug 1, 1998 | Aug 15, 1998 |
| № 8274 | S20 | W76 | 03 | 0060 | BETA | Jul 18, 1998 | Jul 25, 1998 | Aug 8, 1998 |
| № 8273 | S24 | W68 | 01 | 0000 | ALPHA | Jul 19, 1998 | Jul 26, 1998 | Aug 9, 1998 |
| № 8270 | S24 | W86 | 02 | 0040 | ALPHA | Jul 17, 1998 | Jul 24, 1998 | Aug 7, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to July 1998. The gray background is the average SSN index.
