8 April 2012
⇐20120407 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120409⇒

NOAA
2 Active Regions
11450
11452

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22S15
(-354",-160") 		E35-W04
(39) 		6.7 -3.0 -5.1e33
2 E21N46
(-238",754") 		E34-E08
(26) 		1.0 -1.3 -1.1e33
3 W53S76
(191",-907") 		E09-W69
(78) 		0.5 1.1 2.8e33

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-Apr-2012 23:00 UT .