17 July 2020
⇐20200716 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200718⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03N69
(16",852") 		E58-W85
(143) 		3.2 1.0 1.2e21
2 W22S08
(351",-198") 		W06-W35
(29) 		2.2 0.5 1.7e20
3 E22S13
(-345",-276") 		E34-E09
(25) 		2.1 -0.5 -2.0e20
4 W11S54
(104",-804") 		E52-W52
(104) 		2.1 -0.7 -4.6e20
5 W37S34
(478",-574") 		W34-W41
(7) 		0.1 -0.4 -1.3e19
6 E19S25
(-277",-469") 		E23-E15
(8) 		0.1 -0.6 -1.2e19
7 E09S57
(-80",-834") 		E12-E06
(6) 		0.0 -1.1 -1.6e19
8 E45N01
(-669",-43") 		E47-E42
(5) 		0.0 -0.8 -7.1e18
9 W09N18
(148",220") 		W08-W11
(3) 		0.0 -2.1 -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 17-Jul-2020 19:00 UT .