Solar Cycle 23 - Top 25 sunspot regions

On this page you will find an overview of the largest sunspot regions from Solar Cycle 23. This page is updated daily. Sunspot information comes from the NOAA SWPC.

RegionSize Number of
sunspots
Class Magn. Class Spot
12003/10/3004862610108FKC
22001/03/309393244051FKI
32000/09/209169214028FKC
42004/07/220652201067FKC
52002/08/200069199060EKC
62003/10/230484175056EKC
72003/10/310488175034FKC
82005/01/170720163037EKC
92002/09/110105152040FKI
101998/09/048323146033FKC
112005/09/100808143038FKC
122001/11/119690142074FKC
131999/08/038651137043FKI
142004/08/140656136099FKC
152002/07/170030135071FKC
162000/05/168996128045EKC
171999/11/198765128035EKC
182003/06/120375125041FKC
191999/10/188731122054FKC
202001/11/019682121061EKC
212000/04/248970121031EKC
222002/10/240162112041FKI
232001/09/119608111052FKC
242000/03/038882110024EKC
251999/12/248806110028FHC

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Last X-flare:2017/09/10X8.2
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