26 September 2019
⇐20190925 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190927⇒

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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E07N61
(-53",780") 		E85-W83
(168) 		5.3 0.9 1.2e21
2 W25N18
(382",195") 		W10-W38
(28) 		3.0 1.3 6.6e20
3 E22S05
(-351",-182") 		E36-E08
(28) 		2.7 -0.3 -1.5e20
4 W25S15
(396",-352") 		W06-W40
(34) 		1.9 1.0 3.6e20
5 E31S33
(-413",-603") 		E38-E26
(12) 		0.3 -0.5 -3.4e19
6 E48S28
(-631",-519") 		E55-E43
(12) 		0.2 -0.7 -4.2e19
7 E41S10
(-619",-249") 		E44-E36
(8) 		0.2 -0.7 -3.0e19
8 E55S07
(-783",-175") 		E60-E51
(9) 		0.1 -0.8 -2.1e19
9 E19N34
(-257",436") 		E23-E15
(8) 		0.1 -0.9 -1.5e19
10 E46S58
(-367",-848") 		E48-E43
(5) 		0.1 0.3 1.3e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 26-Sep-2019 23:40 UT .