27 August 2017
⇐20170826 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170828⇒

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 E39N50
(-384",661") 		E59-W82
(141) 		10.8 0.7 6.1e33
2 E29S13
(-445",-319") 		E38-E19
(19) 		1.8 0.6 4.1e32
3 W07S66
(46",-910") 		E16-W18
(34) 		0.4 -0.8 -1.3e33

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 27-Aug-2017 19:30 UT .