Sunspot region AR12877
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2021/09/26 | 4 | 10 | BXO | S13E06 | |
| 2021/09/27 | 4 | 20 | CRO | S17W12 | |
| 2021/09/28 | 10 | 30 | CRO | S18W27 | |
| 2021/09/29 | 14 | 130 | DAI | S18W41 | |
| 2021/09/30 | 13 | 200 | DAO | S18W52 | |
| 2021/10/01 | 4 | 200 | DAO | S18W66 | |
| 2021/10/02 | 2 | 150 | DAO | S20W78 | |
| 2021/10/03 | 1 | 30 | HSX | S21W93 | |
| 2021/10/04 | 1 | 30 | HSX | S21W0* |
2021/09/26
2021/09/27
2021/09/28
2021/09/29
2021/09/30
2021/10/01
2021/10/02
2021/10/03
2021/10/04
|
2021/09/26
2021/09/27
2021/09/28
2021/09/29
2021/09/30
2021/10/01
2021/10/02
2021/10/03
2021/10/04
|
| B | C |
|---|---|
| 28 | 7 |
The top 10 solar flares from sunspot region 12877
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C2.8 | 2021/09/29 | 21:46 | 21:56 | 22:02 | |
| 2 | C1.9 | 2021/10/03 | 07:07 | 07:22 | 07:46 | |
| 3 | C1.7 | 2021/09/29 | 22:34 | 22:45 | 22:50 | |
| 4 | C1.7 | 2021/10/02 | 22:23 | 22:40 | 22:57 | |
| 5 | C1.4 | 2021/09/29 | 22:10 | 22:13 | 22:17 | |
| 6 | C1.2 | 2021/09/30 | 12:43 | 12:49 | 12:55 | |
| 7 | C1.0 | 2021/09/29 | 14:15 | 14:21 | 14:25 | |
| 8 | B9.5 | 2021/09/30 | 05:42 | 05:49 | 05:55 | |
| 9 | B9.4 | 2021/10/04 | 02:52 | 03:07 | 03:18 | |
| 10 | B8.6 | 2021/09/29 | 11:11 | 11:19 | 11:25 |
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 979Feb 8-9 CMEs 17Do the high-resolution sunspot counts point to more complex sunspots? 52AR 4371 19AR 4373 3
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 137.7 +25.1 |
| Last 30 days | 126 +20.7 |