28 January 2015
⇐20150127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150129⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S58
(-255",-782") 		E68-W86
(154) 		7.9 -1.6 -1.2e34
2 E21N13
(-335",313") 		E23-E19
(4) 		0.1 -5.0 -7.5e31

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 28-Jan-2015 22:35 UT .