30 December 2013
⇐20131229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131231⇒

NOAA
7 Active Regions
11931
11934
11936
11937
11938
11939
11935

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E20N10
(-322",214") 		E36-W05
(41) 		5.2 3.0 4.0e33
2 W22N24
(334",444") 		W18-W26
(8) 		0.1 -5.0 -2.6e32
3 W31N33
(420",571") 		W27-W36
(9) 		0.1 -1.6 -7.8e31

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 30-Dec-2013 20:35 UT .