18 January 2014
20140117 Week Rotation Today Rotation Week 20140119



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N37
(-315",652")
E56-W08
(64)
4.5 1.7 4.5e33
2 W54S55
(451",-768")
W32-W63
(31)
0.7 -0.5 -5.5e32
3 E14N01
(-238",102")
E22-E05
(17)
0.6 3.8 5.1e32
4 W09S63
(72",-832")
W06-W12
(6)
0.0 -3.4 -1.4e32

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-Jan-2014 20:35 UT .