26 August 2017
⇐20170825 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170827⇒

NOAA
2 Active Regions
12671
12672

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 E49N29
(-628",397") 		E70-E28
(42) 		3.5 0.6 1.5e33
2 E32N69
(-177",847") 		E81-W90
(171) 		3.1 0.8 4.1e33
3 E09S62
(-70",-886") 		E44-W13
(57) 		0.8 -0.5 -1.0e33
4 W39S59
(305",-855") 		W26-W59
(33) 		0.2 -0.4 -3.3e32
5 W12S05
(205",-189") 		W10-W16
(6) 		0.2 -2.5 -8.4e31

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 26-Aug-2017 19:30 UT .