23 August 2019
⇐20190822 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190824⇒

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 E13S12
(-208",-307") 		E23-W11
(34) 		4.1 -1.6 -1.0e21
2 W40N73
(176",876") 		E74-W75
(149) 		1.6 1.4 1.0e21
3 W07S66
(43",-908") 		E36-W40
(76) 		0.6 -0.6 -2.2e20
4 W38N09
(579",62") 		W32-W44
(12) 		0.3 0.6 3.9e19
5 W44S46
(460",-732") 		W48-W48
(1.1e04) 		-0.8 3.5 3.9e20
6 E05S30
(-68",-568") 		E07-E02
(5) 		0.1 -1.8 -2.7e19
7 E67N58
(-456",780") 		E87-E60
(27) 		0.0 0.3 6.1e18

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-Aug-2019 22:40 UT .