15 August 2019
⇐20190814 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190816⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S44
(-219",-727") 		E34-W25
(59) 		5.5 -0.5 -6.5e20
2 W13N69
(77",841") 		E68-W87
(155) 		3.5 1.2 1.4e21
3 E42S13
(-617",-299") 		E48-E38
(10) 		0.3 -0.5 -3.6e19
4 E43S53
(-384",-803") 		E51-E43
(8) 		0.2 -1.4 -9.9e19
5 E27S50
(-282",-783") 		E31-E22
(9) 		0.1 -0.7 -2.5e19
6 W47N03
(696",-31") 		W43-W52
(9) 		0.1 -0.8 -1.9e19
7 W05N24
(69",289") 		W02-W07
(5) 		0.0 -0.9 -6.5e18
8 E09N16
(-141",160") 		E10-E07
(3) 		0.0 -1.3 -7.3e18

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 15-Aug-2019 23:30 UT .