31 December 2014
⇐20141230 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150101⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13S57
(-118",-794") 		E46-W83
(129) 		8.7 -1.6 -1.2e34
2 W17N51
(186",784") 		W02-W39
(37) 		2.4 0.7 1.5e33

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 31-Dec-2014 22:35 UT .