21 July 2018
⇐20180720 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180722⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13S17
(-203",-355") 		E51-W22
(73) 		9.1 -0.7 -1.7e21
2 W03S55
(29",-821") 		E55-W32
(87) 		2.6 -0.6 -1.9e21
3 W45N67
(256",847") 		E17-W67
(84) 		2.3 1.3 7.4e21
4 W27S26
(384",-473") 		W25-W29
(4) 		0.2 -0.9 -6.5e19
5 W32S13
(482",-280") 		W28-W36
(8) 		0.2 -0.6 -3.6e19
6 E43S42
(-476",-678") 		E47-E39
(8) 		0.1 -0.9 -1.2e20
7 W19S26
(280",-485") 		W16-W23
(7) 		0.1 -0.7 -2.6e19

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 21-Jul-2018 23:10 UT .