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X12.9 solar flare on 2017-09-10
ClassX12.9GOES-16 science data
Peak16:062017-09-10 UTC
Duration57 min
Peak flux1.3e-03W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (since Jun 2017) | 2 / 108 |
| Rank in year | 2 / 415 |
| Other M/X flares that day | 1 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 24 |
Compared with the strongest flares of 2017
X14.6
X12.9
X3.2
X2.1
X1.2
X1.2
M8.4
M6.4
M6.0
M5.8
M5.8
M5.8
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:35 | 03:09 | 51 | M1.4 | – | – |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
← M5.8 2017-09-09X1.5 2021-07-03 →
About this page
A X12.9 flare that began 2017-09-10 15:34 UTC; No. 2 of 415 C-class-or-larger flares in 2017.