18 September 2020
⇐20200917 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200919⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E01N15
(-9",124") 		E33-W37
(70) 		8.3 0.0 1.8e19
2 E15N67
(-97",827") 		E56-W71
(127) 		3.8 1.2 1.4e21
3 E02S52
(-21",-821") 		E36-W27
(63) 		1.9 -0.7 -4.1e20
4 W09S19
(146",-415") 		W05-W13
(8) 		0.2 -1.0 -4.0e19
5 W46N01
(689",-58") 		W43-W50
(7) 		0.2 -1.0 -4.2e19
6 W03S31
(43",-585") 		E01-W05
(6) 		0.1 -1.3 -2.6e19
7 E14S32
(-193",-596") 		E18-E11
(7) 		0.1 -0.7 -1.1e19
8 W21S16
(327",-363") 		W19-W22
(3) 		0.0 1.1 8.8e18

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 18-Sep-2020 10:28 UT .