17 October 2019
⇐20191016 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20191018⇒

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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 W07S43
(91",-720") 		E43-W39
(82) 		7.5 -0.9 -1.5e21
2 W33N69
(181",870") 		E70-W68
(138) 		2.7 1.4 1.6e21
3 E57N15
(-780",196") 		E72-E42
(30) 		1.8 0.5 2.6e20
4 E05N08
(-90",34") 		E07-E02
(5) 		0.1 -1.1 -1.9e19
5 W27S38
(351",-654") 		W23-W33
(10) 		0.1 -0.5 -1.1e19
6 W01N10
(9",72") 		E01-W02
(3) 		0.1 -1.1 -8.7e18
7 W26S25
(388",-478") 		W24-W29
(5) 		0.0 -0.9 -6.7e18

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 17-Oct-2019 23:40 UT .