21 December 2014
20141220 Week Rotation Today Rotation Week 20141222



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22S62
(-172",-850")
E78-W21
(99)
3.3 -0.7 -3.1e33
2 E51N38
(-595",621")
E52-E44
(8)
1.8 0.8 1.7e33
3 W29N07
(475",151")
W25-W34
(9)
0.3 -9.3 -8.1e32
4 E09N69
(-55",922")
E18-W06
(24)
0.2 -0.8 -4.5e32
5 W21S36
(291",-547")
W18-W24
(6)
0.1 -6.1 -3.1e32

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 21-Dec-2014 22:35 UT .