17 December 2013
20131216 Week Rotation Today Rotation Week 20131218



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W58N46
(573",711")
W28-W80
(52)
1.8 -0.7 -3.2e33
2 E62N44
(-615",687")
E80-E52
(28)
0.4 0.5 5.7e32

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-2013 20:35 UT .