Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on July 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 651 | S16 | E27 | 12 | 0010 | Beta | Jul 19, 2004 | Jul 26, 2004 | Aug 9, 2004 |
| № 650 | S08 | E16 | 02 | 0010 | Alpha | Jul 18, 2004 | Jul 25, 2004 | Aug 8, 2004 |
| № 649 | S10 | E38 | 38 | 0360 | Beta-Gamma-Delta | Jul 20, 2004 | Jul 27, 2004 | Aug 9, 2004 |
| № 648 | N15 | W53 | 02 | 0010 | Beta | Jul 13, 2004 | Jul 20, 2004 | Aug 3, 2004 |
| № 646 | N14 | W86 | 07 | 0010 | Beta | Jul 11, 2004 | Jul 17, 2004 | Jul 31, 2004 |
| № 644 | N12 | E02 | 04 | 0120 | Beta | Jul 17, 2004 | Jul 24, 2004 | Aug 7, 2004 |
| № 642 | S08 | W44 | 11 | 0110 | 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.
