8 February 2014
⇐20140207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140209⇒

NOAA
7 Active Regions
11967
11968
11970
11971
11972
11973
11974

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23N42
(285",720") 		E23-W53
(76) 		5.7 -1.4 -6.1e33
2 E17S60
(-142",-785") 		E74-W40
(114) 		4.7 -0.5 -2.0e33
3 W32S04
(515",31") 		W25-W39
(14) 		0.3 -1.4 -1.4e32
4 W40S46
(430",-644") 		W37-W42
(5) 		0.1 -1.9 -1.1e32

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-Feb-2014 20:35 UT .