12 August 2019
⇐20190811 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190813⇒

NOAA
2 Active Regions
12746
12747

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 W09S14
(138",-339") 		E19-W25
(44) 		6.9 0.1 1.2e20
2 E02N66
(-11",819") 		E66-W90
(156) 		4.2 1.2 1.6e21
3 E18S58
(-154",-850") 		47
(3.7e04) 		-0.6 3.0 1.1e21
4 W28S24
(404",-474") 		W20-W38
(18) 		0.5 -0.7 -6.7e19
5 E40N15
(-588",167") 		E44-E37
(7) 		0.1 -0.5 -1.1e19
6 W24S68
(145",-909") 		W12-W41
(29) 		0.1 -0.9 -6.0e19
7 W15S33
(213",-597") 		W14-W17
(3) 		0.1 -1.0 -1.7e19
8 W37S18
(540",-369") 		W34-W39
(5) 		0.1 -1.1 -1.4e19
9 E06N39
(-73",511") 		E08-E02
(6) 		0.1 -1.3 -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 12-Aug-2019 23:30 UT .