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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 12, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8271 | S09 | E59 | 04 | 0040 | BETA | Jul 18, 1998 | Jul 25, 1998 | Aug 7, 1998 |
| № 8270 | S20 | E50 | 12 | 0080 | BETA | Jul 17, 1998 | Jul 24, 1998 | Aug 7, 1998 |
| № 8269 | N17 | E54 | 04 | 0040 | BETA | Jul 17, 1998 | Jul 24, 1998 | Aug 7, 1998 |
| № 8266 | N25 | W04 | 02 | 0000 | ALPHA | Jul 13, 1998 | Jul 20, 1998 | Aug 3, 1998 |
| № 8265 | S24 | W50 | 01 | 0000 | ALPHA | Jul 9, 1998 | Jul 16, 1998 | Jul 30, 1998 |
| № 8264 | N17 | W74 | 01 | 0090 | ALPHA | Jul 8, 1998 | Jul 15, 1998 | Jul 28, 1998 |
| № 8263 | S22 | W76 | 02 | 0100 | BETA | Jul 7, 1998 | Jul 14, 1998 | Jul 28, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to July 1998. The gray background is the average SSN index.
