24 December 2015
20151223 Week Rotation Today Rotation Week 20151225



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29S59
(241",-822")
E73-W49
(122)
4.8 -1.9 -1.1e34
2 E34N50
(-355",762")
E73-E15
(58)
3.9 1.0 4.4e33
3 E22S21
(-337",-325")
E32-E12
(20)
0.6 1.1 2.1e32

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 24-Dec-2015 21:35 UT .