17 December 2014
20141216 Week Rotation Today Rotation Week 20141218



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E57S52
(-500",-767")
E76-E55
(21)
0.8 -0.7 -1.5e33
2 E27N07
(-439",141")
E30-E24
(6)
0.2 -20.5 -1.3e33
3 W42N60
(327",851")
W39-W44
(5)
0.1 -0.6 -1.6e32

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 17-Dec-2014 22:35 UT .