17 August 2013
20130816 Week Rotation Today Rotation Week 20130818



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W37N32
(481",418")
W03-W58
(55)
5.1 -2.5 -6.0e33
2 E21N07
(-345",10")
E29-E14
(15)
1.6 6.2 2.4e33
3 E48N42
(-522",581")
E68-E33
(35)
0.5 -0.8 -3.7e32
4 W24N62
(181",781")
W13-W36
(23)
0.4 0.5 1.8e32
5 E41N22
(-576",280")
E55-E29
(26)
0.3 0.9 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 17-Aug-2013 21:00 UT .