27 September 2019
⇐20190926 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190928⇒

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Flare Prediction System
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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02N63
(19",792") 		E90-W27
(117) 		5.4 0.9 1.4e21
2 E27S16
(-417",-367") 		E43-W05
(48) 		5.1 -0.6 -5.3e20
3 W40N18
(592",211") 		W27-W54
(27) 		2.4 1.3 6.2e20
4 W39S18
(581",-375") 		W28-W50
(22) 		1.5 0.6 2.1e20
5 E19S36
(-250",-646") 		E25-E09
(16) 		0.4 -0.5 -4.4e19
6 E43S09
(-652",-232") 		E49-E38
(11) 		0.4 -1.3 -1.1e20
7 W20S24
(307",-484") 		W16-W24
(8) 		0.1 -0.9 -1.8e19
8 E13S26
(-189",-518") 		E15-E09
(6) 		0.1 -0.6 -7.6e18
9 W18N11
(291",79") 		W16-W20
(4) 		0.0 -1.1 -8.2e18
10 E22S00
(-364",-112") 		E23-E21
(2) 		0.0 -1.5 -1.0e19

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 27-Sep-2019 23:40 UT .