24 August 2020
⇐20200823 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200825⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E14N26
(-207",309") 		E68-W43
(111) 		13.2 0.2 4.4e20
2 E08N64
(-60",796") 		E55-W44
(99) 		5.3 0.8 1.3e21
3 W17S07
(283",-225") 		W05-W26
(21) 		1.8 -0.1 -3.0e19
4 E32S64
(-216",-892") 		E49-W22
(71) 		0.7 -0.4 -1.5e20
5 E21N47
(-231",621") 		E29-E13
(16) 		0.2 -0.8 -3.8e19
6 E25S22
(-366",-459") 		E28-E22
(6) 		0.0 -0.7 -6.3e18
7 E17S20
(-257",-424") 		E18-E15
(3) 		0.0 1.1 6.9e18
8 E08N26
(-114",307") 		E09-E06
(3) 		0.0 -3.7 -2.2e19

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 24-Aug-2020 19:00 UT .