23 November 2013
⇐20131122 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131124⇒

NOAA
4 Active Regions
11896
11897
11899
11903

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E20S49
(-214",-756") 		E38-E06
(32) 		1.0 -0.9 -7.0e32
2 E35N45
(-390",673") 		E49-E12
(37) 		0.6 0.5 2.6e32
3 E23N23
(-345",346") 		E30-E14
(16) 		0.5 6.2 9.2e32
4 E44N59
(-351",817") 		E65-E27
(38) 		0.2 -0.5 -1.9e32

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 23-Nov-2013 22:05 UT .