23 January 2020
⇐20200122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200124⇒

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 E15S70
(-87",-882") 		E74-W71
(145) 		3.0 -0.7 -3.5e21
2 W14N17
(231",367") 		E05-W23
(28) 		1.9 -0.2 -1.1e20
3 E21S42
(-262",-584") 		E29-E06
(23) 		1.7 -0.0 -3.7e19
4 E26N02
(-436",111") 		E37-E14
(23) 		1.4 0.1 5.7e19
5 W03N65
(19",919") 		E49-W36
(85) 		1.3 0.6 2.0e21
6 E39S14
(-594",-165") 		E46-E32
(14) 		0.4 -0.6 -1.1e20
7 E41S21
(-602",-286") 		E44-E38
(6) 		0.1 -1.3 -5.8e19

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 23-Jan-2020 20:30 UT .