8 August 2019
⇐20190807 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190809⇒

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 W22S26
(316",-503") 		E04-W35
(39) 		5.0 -0.5 -5.3e20
2 W14N68
(82",838") 		E71-W65
(136) 		3.9 1.3 1.7e21
3 E23S13
(-361",-313") 		E41-E04
(37) 		1.7 0.1 1.9e19
4 W05S67
(30",-908") 		E24-W37
(61) 		0.4 -0.7 -1.5e20
5 E12N04
(-191",-31") 		E15-E07
(8) 		0.3 -1.0 -4.5e19
6 W31N26
(436",339") 		W26-W36
(10) 		0.3 -0.6 -3.0e19
7 W23S47
(249",-751") 		W15-W29
(14) 		0.2 -0.6 -3.2e19
8 W38S59
(297",-850") 		W27-W48
(21) 		0.2 -0.4 -3.0e19
9 W08N29
(117",364") 		W05-W11
(6) 		0.1 -0.8 -8.5e18
10 W33N10
(507",72") 		W31-W36
(5) 		0.1 -2.2 -2.4e19
11 W18N27
(262",337") 		W15-W20
(5) 		0.1 -1.0 -9.4e18

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 8-Aug-2019 23:30 UT .