4 February 2019
⇐20190203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190205⇒

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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 E14S26
(-206",-334") 		63
(1.7e05) 		-0.3 4.9 8.3e21
2 E15S67
(-94",-855") 		E70-W72
(142) 		3.8 -0.8 -3.9e21
3 E12N08
(-195",232") 		E22-W02
(24) 		2.3 -0.2 -1.0e20
4 E43N57
(-360",854") 		E49-E28
(21) 		0.4 0.5 7.8e20
5 W46N06
(701",177") 		W37-W53
(16) 		0.4 -0.8 -1.8e20
6 W40S29
(549",-391") 		W36-W44
(8) 		0.1 -0.7 -3.7e19
7 W31N07
(493",210") 		W29-W33
(4) 		0.1 -2.0 -6.9e19

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 4-Feb-2019 20:30 UT .