4 September 2020
⇐20200903 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200905⇒

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 W03S15
(51",-367") 		E31-W29
(60) 		6.4 -0.2 -1.9e20
2 W25S01
(397",-118") 		W07-W36
(29) 		2.2 0.0 1.7e19
3 W12S61
(97",-882") 		E32-W26
(58) 		0.9 -0.2 -9.0e19
4 E51N71
(-242",867") 		E81-E29
(52) 		0.8 1.2 4.7e20
5 W27S15
(420",-343") 		W26-W28
(2) 		0.0 1.8 1.6e19

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-Sep-2020 11:00 UT .