11 June 2019
⇐20190610 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190612⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16N59
(134",806") 		E57-W44
(101) 		4.7 0.9 4.7e21
2 E28S14
(-426",-231") 		E47-E04
(43) 		4.5 -0.3 -4.6e20
3 E37S56
(-319",-787") 		E53-E44
(9) 		1.4 -0.8 -1.6e21
4 W38S68
(219",-879") 		E16-W60
(76) 		0.8 -1.1 -3.4e21
5 E32S29
(-442",-472") 		E44-E19
(25) 		0.7 -1.1 -3.8e20
6 W36N16
(540",248") 		W33-W40
(7) 		0.1 1.9 9.8e19
7 W04S32
(57",-508") 		W01-W06
(5) 		0.1 -1.3 -2.2e19
8 W23S28
(325",-451") 		W21-W25
(4) 		0.0 -0.8 -1.2e19

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 11-Jun-2019 22:50 UT .