9 February 2020
⇐20200208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200210⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W12S64
(87",-822") 		E68-W35
(103) 		4.8 -1.2 -5.7e21
2 E41S15
(-613",-172") 		E58-E28
(30) 		2.0 -0.4 -4.0e20
3 W11N02
(181",146") 		E08-W24
(32) 		1.9 -0.2 -6.8e19
4 W13N64
(94",914") 		E31-W35
(66) 		1.1 1.0 3.0e21
5 E54S25
(-712",-354") 		E64-E47
(17) 		0.2 -0.3 -4.4e19
6 E66S23
(-814",-340") 		E71-E61
(10) 		0.1 -0.8 -1.7e20
7 W04N16
(69",371") 		W01-W08
(7) 		0.1 -1.0 -2.3e19
8 E21S05
(-354",19") 		E24-E19
(5) 		0.1 -1.0 -1.7e19

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 9-Feb-2020 20:30 UT .