3 May 2021
⇐20210502 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210504⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W00N18
(1",359") 		E50-W50
(100) 		20.6 0.0 9.8e19
2 E19S41
(-240",-574") 		E35-E02
(33) 		1.5 -0.2 -7.3e19
3 W44S33
(555",-475") 		W29-W53
(24) 		0.7 1.3 2.1e20
4 E52S68
(-286",-864") 		E65-E41
(24) 		0.6 -1.2 -3.6e20
5 W22N71
(112",919") 		E23-W55
(78) 		0.3 0.8 1.8e20
6 E10S04
(-172",-4") 		E13-E08
(5) 		0.1 -0.9 -8.6e18
7 E52S49
(-493",-691") 		E54-E47
(7) 		0.1 -0.7 -1.3e19
8 W24S10
(376",-104") 		W22-W25
(3) 		0.1 -1.3 -1.2e19

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 3-May-2021 23:30 UT .