30 May 2019
⇐20190529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190531⇒

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 W23S19
(354",-289") 		W05-W36
(31) 		4.2 -0.1 -1.8e20
2 W11N20
(169",333") 		E12-W25
(37) 		2.5 -0.0 -1.1e19
3 W03S68
(16",-872") 		E66-W77
(143) 		2.1 -0.8 -3.1e21
4 E05N69
(-30",891") 		E57-W64
(121) 		1.2 1.1 3.8e21
5 W09N32
(129",511") 		W07-W12
(5) 		0.1 -0.6 -1.5e19
6 E02S08
(-39",-118") 		E03-E01
(2) 		0.0 -1.6 -1.4e19
7 E18S23
(-272",-353") 		E20-E17
(3) 		0.0 -4.2 -4.6e19

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 30-May-2019 22:20 UT .