3 February 2019
⇐20190202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190204⇒

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 E19S26
(-289",-331") 		55
(1.6e05) 		-0.3 5.2 8.3e21
2 E16S68
(-99",-857") 		E61-W77
(138) 		3.7 -0.8 -4.0e21
3 W28N05
(462",171") 		W10-W44
(34) 		2.1 -0.4 -2.7e20
4 E15N07
(-253",225") 		E26-W03
(29) 		2.0 -0.1 -4.3e19
5 W10N17
(168",379") 		W03-W16
(13) 		0.8 -0.8 -1.6e20
6 W07N06
(118",200") 		W02-W10
(8) 		0.2 -1.2 -4.9e19
7 E11S46
(-133",-631") 		E15-E08
(7) 		0.1 -0.6 -2.1e19

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 3-Feb-2019 20:30 UT .