22 January 2014
⇐20140121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140123⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20N44
(245",736") 		E56-W57
(113) 		7.1 0.9 4.6e33
2 E47N06
(-714",166") 		E57-E39
(18) 		0.4 2.0 4.7e32
3 E25N23
(-384",451") 		E27-E23
(4) 		0.1 -0.6 -1.7e31

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 22-Jan-2014 20:35 UT .