Sunspot region AR9866
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2002/03/09 | 1 | 120 | HSX | S10E80 | |
| 2002/03/10 | 8 | 560 | EKO | S10E73 | |
| 2002/03/11 | 19 | 840 | EKI | S09E61 | |
| 2002/03/12 | 23 | 870 | EKI | S08E47 | |
| 2002/03/13 | 27 | 900 | EKI | S10E35 | |
| 2002/03/14 | 37 | 820 | EKI | S11E20 | |
| 2002/03/15 | 36 | 820 | EKI | S10E07 | |
| 2002/03/16 | 26 | 690 | EKI | S09W06 | |
| 2002/03/17 | 35 | 540 | EKI | S09W19 | |
| 2002/03/18 | 24 | 470 | EAI | S09W33 | |
| 2002/03/19 | 16 | 290 | EAI | S09W46 | |
| 2002/03/20 | 10 | 290 | EAI | S09W59 | |
| 2002/03/21 | 5 | 270 | EAO | S08W73 | |
| 2002/03/22 | 1 | 190 | EAO | S09W84 |
| C | M |
|---|---|
| 12 | 5 |
The top 10 solar flares from sunspot region 9866
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | M8.25 | 2002/03/14 | 01:38 | 01:50 | 02:02 | |
| 2 | M3.72 | 2002/03/09 | 18:31 | 18:56 | 19:39 | |
| 3 | M3.1 | 2002/03/15 | 22:09 | 23:10 | 00:42 | |
| 4 | M1.96 | 2002/03/09 | 21:44 | 22:10 | 22:43 | |
| 5 | M1.48 | 2002/03/19 | 11:06 | 11:44 | 12:31 | |
| 6 | C8.63 | 2002/03/10 | 05:01 | 05:05 | 05:08 | |
| 7 | C8.55 | 2002/03/21 | 07:45 | 08:12 | 08:31 | |
| 8 | C7.57 | 2002/03/12 | 08:31 | 08:37 | 08:43 | |
| 9 | C5.72 | 2002/03/20 | 15:44 | 18:08 | 19:19 | |
| 10 | C3.72 | 2002/03/10 | 21:50 | 21:55 | 22:01 |
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Space weather facts
| Last X-flare | 2025/06/19 | X1.9 |
| Last M-flare | 2025/10/03 | M1.2 |
| Last geomagnetic storm | 2025/10/03 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2025 | 129.8 -3.7 |
| October 2025 | 140.1 +10.3 |
| Last 30 days | 131.3 -1.2 |