Sunspot region AR8439
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/01/13 | 5 | 160 | CAO | S24E75 | |
| 1999/01/14 | 11 | 260 | EAI | S24E65 | |
| 1999/01/15 | 19 | 270 | EAI | S24E53 | |
| 1999/01/16 | 24 | 270 | EAI | S24E41 | |
| 1999/01/17 | 31 | 270 | EAI | S24E28 | |
| 1999/01/18 | 40 | 210 | FAO | S24E14 | |
| 1999/01/19 | 46 | 240 | FAI | S24E00 | |
| 1999/01/20 | 44 | 300 | FAI | S23W13 | |
| 1999/01/21 | 34 | 290 | FAI | S24W28 | |
| 1999/01/22 | 23 | 410 | EAC | S23W42 | |
| 1999/01/23 | 20 | 480 | EKC | S23W57 | |
| 1999/01/24 | 23 | 390 | EHC | S23W70 | |
| 1999/01/25 | 12 | 260 | EKO | S23W82 | |
| 1999/01/26 | 2 | 80 | CAO | S23W94 |
| C | M |
|---|---|
| 41 | 1 |
The top 10 solar flares from sunspot region 8439
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M1.09 | 1999/01/19 | 01:00 | 01:38 | 01:51 | |
| 2 | C8.54 | 1999/01/17 | 19:50 | 19:55 | 19:57 | |
| 3 | C8.53 | 1999/01/18 | 03:46 | 03:49 | 03:52 | |
| 4 | C8.13 | 1999/01/23 | 15:30 | 15:41 | 15:44 | |
| 5 | C8.03 | 1999/01/23 | 15:09 | 15:14 | 15:17 | |
| 6 | C6.89 | 1999/01/18 | 02:26 | 02:34 | 02:38 | |
| 7 | C6.87 | 1999/01/18 | 13:10 | 13:14 | 13:23 | |
| 8 | C6.64 | 1999/01/18 | 06:33 | 06:44 | 06:49 | |
| 9 | C5.9 | 1999/01/17 | 16:58 | 17:01 | 17:04 | |
| 10 | C5.6 | 1999/01/19 | 11:18 | 11:24 | 11:32 |
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Space weather facts
| Last X-flare | 2026/06/03 | X1.0 |
| Last M-flare | 2026/06/21 | M6.9 |
| Last geomagnetic storm | 2026/06/11 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| May 2026 | 101.4 +22.1 |
| June 2026 | 99.1 -2.3 |
| Last 30 days | 107.7 +10.8 |
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