20 June 2020
⇐20200619 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200621⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S61
(-147",-838") 		E62-W67
(129) 		3.1 -0.7 -3.2e21
2 W13N67
(79",862") 		E71-W68
(139) 		1.8 1.0 3.5e21
3 E34S13
(-520",-228") 		E43-E26
(17) 		0.7 -0.6 -1.6e20
4 W42N16
(604",239") 		W37-W46
(9) 		0.1 -0.5 -3.0e19
5 E23S37
(-288",-597") 		E27-E17
(10) 		0.1 -0.6 -4.0e19
6 E44S12
(-643",-224") 		E47-E42
(5) 		0.1 -0.8 -3.7e19
7 W38S13
(565",-232") 		W35-W40
(5) 		0.1 -0.9 -2.7e19
8 W41S15
(601",-265") 		W39-W43
(4) 		0.0 -0.8 -1.6e19

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 20-Jun-2020 19:00 UT .