20 August 2019
⇐20190819 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190821⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E05N73
(-23",865") 		E59-W91
(150) 		2.5 1.3 1.2e21
2 W01S10
(15",-280") 		E08-W10
(18) 		1.8 -0.1 -3.8e19
3 W19S59
(155",-865") 		E39-W47
(86) 		1.6 -0.8 -5.2e20
4 E55S11
(-768",-244") 		E61-E47
(14) 		0.9 -1.4 -3.4e20
5 W47S30
(604",-535") 		W41-W52
(11) 		0.2 -1.3 -7.2e19
6 W29S27
(405",-519") 		W24-W32
(8) 		0.1 -0.6 -1.6e19
7 W67N59
(453",783") 		W62-W77
(15) 		0.1 1.2 4.7e19
8 E11N26
(-159",309") 		E13-E09
(4) 		0.0 -2.0 -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 20-Aug-2019 23:40 UT .