31 August 2019
⇐20190830 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190901⇒

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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 W36N13
(543",125") 		E00-W59
(59) 		5.9 1.0 1.1e21
2 E21N32
(-295",400") 		E45-W04
(49) 		4.5 -0.1 -1.1e20
3 E07N68
(-45",833") 		E70-W48
(118) 		4.2 1.1 1.5e21
4 E21S18
(-324",-402") 		E35-E07
(28) 		1.7 -0.3 -7.7e19
5 E32N06
(-508",-1") 		E50-E19
(31) 		1.6 -0.1 -4.2e19
6 E43S30
(-564",-550") 		E56-E33
(23) 		0.4 -0.5 -6.4e19
7 E06S26
(-95",-519") 		E08-E04
(4) 		0.0 -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 31-Aug-2019 23:40 UT .