19 June 2019
⇐20190618 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190620⇒

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 W11S10
(183",-188") 		E08-W22
(30) 		2.7 0.2 1.0e20
2 E32S27
(-444",-445") 		E52-E10
(42) 		2.6 -0.5 -5.5e20
3 W26S63
(189",-853") 		E58-W66
(124) 		2.3 -0.7 -3.5e21
4 W11N67
(66",862") 		E72-W62
(134) 		1.9 1.2 4.0e21
5 W02N18
(36",266") 		E08-W10
(18) 		1.9 0.0 1.1e19
6 W30S08
(471",-150") 		W17-W41
(24) 		1.8 -0.2 -1.0e20
7 E44S40
(-504",-621") 		E51-E39
(12) 		0.1 -0.5 -2.7e19

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 19-Jun-2019 22:50 UT .