15 September 2020
⇐20200914 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200916⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W19N70
(105",852") 		E74-W66
(140) 		3.4 1.4 1.7e21
2 E26S04
(-415",-177") 		E49-W02
(51) 		3.3 -0.1 -4.1e19
3 W30S04
(475",-171") 		W16-W43
(27) 		3.2 -0.2 -1.3e20
4 W29S52
(280",-812") 		W19-W38
(19) 		0.7 -0.3 -8.4e19
5 W09N04
(148",-48") 		W03-W15
(12) 		0.4 -1.0 -5.5e19
6 E02S67
(-12",-918") 		E14-W08
(22) 		0.2 -0.4 -3.8e19
7 W17S20
(258",-438") 		W15-W18
(3) 		0.1 -1.1 -1.5e19
8 W10S16
(161",-367") 		W08-W12
(4) 		0.1 -1.1 -1.4e19
9 W13S08
(215",-245") 		W12-W15
(3) 		0.1 -1.8 -1.5e19

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-Sep-2020 19:00 UT .