6 September 2020
⇐20200905 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200907⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W30S12
(470",-297") 		W03-W53
(50) 		5.0 -0.1 -1.2e20
2 E44N73
(-196",877") 		E78-W31
(109) 		1.3 1.3 7.8e20
3 W26S58
(222",-855") 		W09-W36
(27) 		0.6 -0.8 -2.0e20
4 E37S60
(-288",-865") 		E43-E23
(20) 		0.2 -0.3 -3.2e19
5 E24S49
(-253",-787") 		E29-E19
(10) 		0.1 -0.4 -1.3e19
6 W48S15
(684",-326") 		W44-W53
(9) 		0.1 -1.7 -3.4e19
7 E20S22
(-300",-453") 		E21-E17
(4) 		0.1 -0.6 -7.1e18
8 E35S68
(-208",-910") 		E42-E34
(8) 		0.0 -1.7 -5.7e19

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 6-Sep-2020 01:00 UT .