24 May 2020
⇐20200523 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200525⇒

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 E03S56
(-31",-777") 		E62-W77
(139) 		5.0 -0.7 -3.1e21
2 W29S11
(450",-162") 		W15-W43
(28) 		2.2 0.4 2.8e20
3 E24S13
(-378",-192") 		E29-E19
(10) 		0.4 -0.9 -1.1e20
4 E47N04
(-691",90") 		E52-E41
(11) 		0.2 -1.6 -1.9e20
5 W35N04
(550",93") 		W34-W38
(4) 		0.0 -0.7 -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 24-May-2020 19:30 UT .