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X1.1 solar flare on 2005-09-09
ClassX1.1NOAA report
Peak03:002005-09-09 UTC
Duration24 min
Peak flux1.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 384 / 491 |
| Rank in year | 16 / 699 |
| Other M/X flares that day | 7 |
| M/X flares that month | 36 |
| Solar cycle | Cycle 23 |
| Position on disk | S12E68 |
| Active region | AR 10808 (77 flares) |
Compared with the strongest flares of 2005
X17.0
X7.1
X6.2
X5.4
X3.8
X3.6
X2.6
X2.1
X1.7
X1.7
X1.5
X1.3
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:08 | 02:19 | 21 | M1.0 | S13E68 | 10808 | |
| 02:33 | 02:36 | 6 | M1.1 | S12E68 | 10808 | |
| 04:46 | 05:03 | 26 | M1.8 | – | 10808 | |
| 05:32 | 05:48 | 28 | M6.2 | S13E71 | 10808 | |
| 09:42 | 09:59 | 26 | X3.6 | S11E66 | 10808 | |
| 17:32 | 17:51 | 38 | M1.9 | S11E60 | 10808 | |
| 19:13 | 20:04 | 83 | X6.2 | S12E67 | 10808 |
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.
← X5.4 2005-09-08M6.2 2005-09-09 →
About this page
A X1.1 flare that began 2005-09-09 02:43 UTC; No. 16 of 699 C-class-or-larger flares in 2005.