Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 12, 2004. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 647 | S14 | E61 | 01 | 0010 | Alpha | Jul 18, 2004 | Jul 24, 2004 | Aug 7, 2004 |
| № 646 | N13 | W33 | 03 | 0010 | Beta | Jul 11, 2004 | Jul 17, 2004 | Jul 31, 2004 |
| № 645 | N11 | W18 | 04 | 0020 | Beta | Jul 12, 2004 | Jul 18, 2004 | Aug 1, 2004 |
| № 644 | N12 | E58 | 01 | 0140 | Alpha | Jul 17, 2004 | Jul 24, 2004 | Aug 7, 2004 |
| № 643 | S08 | W37 | 02 | 0010 | Beta | Jul 10, 2004 | Jul 17, 2004 | Jul 31, 2004 |
| № 642 | S07 | E12 | 27 | 0130 | Beta | Jul 14, 2004 | Jul 21, 2004 | Aug 3, 2004 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1975 to July 2004. The gray background is the average SSN index.
