No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 7, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8405 | S16 | E64 | 03 | 0110 | BETA | Dec 13, 1998 | Dec 20, 1998 | Jan 2, 1999 |
| № 8404 | S22 | E02 | 09 | 0080 | BETA | Dec 8, 1998 | Dec 15, 1998 | Dec 29, 1998 |
| № 8403 | N19 | E15 | 04 | 0050 | BETA | Dec 9, 1998 | Dec 16, 1998 | Dec 30, 1998 |
| № 8402 | N16 | W02 | 12 | 0250 | BETA | Dec 8, 1998 | Dec 15, 1998 | Dec 28, 1998 |
| № 8398 | N18 | W72 | 01 | 0200 | ALPHA | Dec 3, 1998 | Dec 9, 1998 | Dec 23, 1998 |
| № 8397 | N16 | W24 | 03 | 0210 | ALPHA | Dec 6, 1998 | Dec 13, 1998 | Dec 27, 1998 |
| № 8395 | N20 | W59 | 04 | 0140 | BETA | Dec 3, 1998 | Dec 10, 1998 | Dec 24, 1998 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1969 to December 1998. The gray background is the average SSN index.
