Sunspot region AR8727
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/10/08 | 2 | 10 | BXO | N18E53 | |
| 1999/10/09 | 3 | 40 | CSO | N18E40 | |
| 1999/10/10 | 3 | 10 | HSX | N18E25 | |
| 1999/10/11 | 3 | 10 | BXO | N18E12 | |
| 1999/10/12 | 4 | 20 | CAO | N18E01 | |
| 1999/10/13 | 4 | 30 | DSO | N19W10 | |
| 1999/10/14 | 9 | 40 | BXO | N21W24 | |
| 1999/10/15 | 7 | 30 | DAO | N20W37 | |
| 1999/10/16 | 1 | 10 | AXX | N20W52 |
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
AR4366 482Do the high-resolution sunspot counts point to more complex sunspots? 44Space Weather Memes 782JHelioviewer Tips and Settings 38Incoming & Unnumbered Active Regions 141
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Space weather facts
| Last X-flare | 2026/02/02 | X2.9 |
| Last M-flare | 2026/02/02 | M2.3 |
| 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 |
| February 2026 | 97 -27 |
| Last 30 days | 118.3 +3.5 |