Sunspot region AR8517
| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 1999/04/17 | 4 | 20 | BXO | N20W21 | |
| 1999/04/18 | 3 | 30 | CSO | N22W36 | |
| 1999/04/19 | 6 | 30 | CRO | N22W51 | |
| 1999/04/20 | 5 | 70 | DSO | N22W63 | |
| 1999/04/21 | 3 | 100 | DSO | N22W77 | |
| 1999/04/22 | 1 | 40 | HSX | N24W88 |
| B | C |
|---|---|
| 3 | 1 |
The top 4 solar flares from sunspot region 8517
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C1.1 | 1999/04/18 | 21:12 | 21:19 | 21:23 | |
| 2 | B8.36 | 1999/04/21 | 00:19 | 00:22 | 00:27 | |
| 3 | B6.76 | 1999/04/21 | 16:46 | 16:50 | 16:52 | |
| 4 | B5.23 | 1999/04/21 | 06:02 | 06:05 | 06:07 |
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
Incoming & Unnumbered Active Regions 1360Strong far side CME 338Unspecified geomagnetic activity 175150 mhz F2 51AR 13932 13
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/23 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 106.6 -45.9 |
| Last 30 days | 116.1 -41.8 |