30 July 2019
⇐20190729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190731⇒

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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 E19N69
(-109",847") 		E78-W82
(160) 		3.4 1.3 1.5e21
2 E33N22
(-483",279") 		E49-E16
(33) 		2.8 1.8 9.7e20
3 E29S14
(-441",-304") 		E40-E18
(22) 		2.3 1.0 4.4e20
4 W26S11
(412",-269") 		W17-W35
(18) 		1.0 -1.5 -2.7e20
5 W25S62
(187",-870") 		W01-W36
(35) 		0.6 -0.7 -1.8e20
6 W32N00
(504",-76") 		W29-W35
(6) 		0.3 -2.2 -1.0e20
7 E18S09
(-282",-236") 		E19-E16
(3) 		0.1 -1.4 -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 30-Jul-2019 23:30 UT .