Sunspot region AR11855
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2013/10/01 | 8 | 10 | BXO | S13E16 | |
| 2013/10/02 | 17 | 80 | DSI | S14E01 | |
| 2013/10/03 | 16 | 130 | DSI | S14W11 | |
| 2013/10/04 | 14 | 90 | DSO | S13W26 | |
| 2013/10/05 | 15 | 80 | DAI | S13W39 | |
| 2013/10/06 | 9 | 70 | DAO | S13W53 | |
| 2013/10/07 | 7 | 40 | CAO | S13W67 | |
| 2013/10/08 | 2 | 30 | CRO | S13W82 |
2013/10/01
2013/10/02
2013/10/03
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2013/10/08
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Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
Do the high-resolution sunspot counts point to more complex sunspots? 40AR4366 253Incoming & Unnumbered Active Regions 141Space Weather Memes 780Current Farside Activity 350
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Space weather facts
| Last X-flare | 2026/02/01 | X1.0 |
| Last M-flare | 2026/02/01 | M1.8 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| Last 30 days | 119.2 +2.7 |