9 August 2019
⇐20190808 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190810⇒

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 W02N69
(13",843") 		E60-W65
(125) 		3.8 1.3 1.6e21
2 E10S15
(-166",-340") 		E24-W12
(36) 		2.9 0.1 3.7e19
3 W33S26
(463",-487") 		W15-W48
(33) 		2.5 -0.6 -3.0e20
4 E52S15
(-723",-301") 		E55-E48
(7) 		0.1 0.4 1.0e19
5 E14S19
(-225",-397") 		E17-E11
(6) 		0.1 -1.0 -1.1e19
6 W04N02
(65",-66") 		W02-W06
(4) 		0.1 -2.4 -1.9e19
7 W37S08
(569",-219") 		W36-W39
(3) 		0.0 -1.2 -8.9e18

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 9-Aug-2019 23:30 UT .