18 December 2013
20131217 Week Rotation Today Rotation Week 20131219



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E54N45
(-564",695")
E72-E26
(46)
1.6 0.5 1.6e33
2 E52N25
(-699",421")
E56-E45
(11)
0.3 4.7 1.5e33
3 W04N53
(36",797")
E06-W08
(14)
0.3 -0.6 -1.5e32

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 18-Dec-2013 20:35 UT .