23 July 2019
⇐20190722 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190724⇒

NOAA
1 Active Region
12745

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 E03S03
(-45",-128") 		E37-W38
(75) 		10.2 -0.2 -2.6e20
2 E28N69
(-163",850") 		E79-W67
(146) 		2.6 1.1 1.1e21
3 W22N20
(334",244") 		W05-W36
(31) 		1.4 0.2 5.6e19
4 E14S66
(-96",-891") 		E60-W39
(99) 		1.0 -0.7 -3.6e20
5 W53S56
(426",-807") 		W38-W63
(25) 		0.4 -0.7 -1.7e20
6 W44S22
(606",-411") 		W38-W48
(10) 		0.2 -0.4 -1.8e19
7 W28S08
(434",-201") 		W26-W29
(3) 		0.0 -1.0 -7.5e18
8 E22N23
(-328",297") 		E24-E19
(5) 		0.0 -1.7 -1.1e19

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 23-Jul-2019 23:30 UT .