5 April 2019
⇐20190404 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190406⇒

NOAA
1 Active Region
12737

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 E07S67
(-45",-837") 		E67-W68
(135) 		4.5 -1.0 -5.8e21
2 W49S18
(691",-237") 		W37-W58
(21) 		2.0 -0.5 -6.3e20
3 E06S36
(-86",-479") 		E18-W09
(27) 		1.6 -0.5 -2.3e20
4 E23S05
(-382",19") 		E33-E16
(17) 		1.2 -0.8 -2.6e20
5 E31S28
(-442",-361") 		E34-E26
(8) 		0.1 -1.0 -4.7e19
6 W35S24
(506",-309") 		W34-W37
(3) 		0.1 -0.8 -1.8e19
7 E27S23
(-409",-285") 		E29-E25
(4) 		0.0 -0.9 -1.3e19

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 5-Apr-2019 19:30 UT .