4 June 2019
⇐20190603 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190605⇒

NOAA
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Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E08S55
(-75",-769") 		E69-W62
(131) 		3.9 -0.7 -2.2e21
2 E09N71
(-48",895") 		E51-W46
(97) 		1.0 1.1 3.3e21
3 E08S08
(-124",-124") 		E11-E02
(9) 		0.7 -1.5 -1.8e20
4 E12S33
(-171",-511") 		E14-E10
(4) 		0.1 -0.6 -1.9e19

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-Jun-2019 22:50 UT .