4 March 2020
⇐20200303 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200305⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13S64
(-97",-812") 		E54-W71
(125) 		6.4 -1.0 -6.0e21
2 W14S14
(233",-121") 		E09-W27
(36) 		5.0 0.2 2.3e20
3 E21N66
(-143",922") 		E40-W15
(55) 		0.6 0.9 2.5e21
4 E43S39
(-515",-540") 		E45-E39
(6) 		0.1 -1.2 -6.2e19
5 E28S08
(-453",-25") 		6
(1.9e03) 		-1.0 4.5 8.5e19
6 W52S03
(763",21") 		W50-W54
(4) 		0.0 -1.9 -5.9e19
7 W41N10
(622",255") 		W38-W43
(5) 		0.0 -1.2 -2.6e19
8 W29S04
(470",47") 		W27-W31
(4) 		0.0 -1.1 -1.3e19

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 4-Mar-2020 20:30 UT .