20 September 2013
20130919 Week Rotation Today Rotation Week 20130921



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W08N39
(102",507")
E21-W18
(39)
4.4 -1.4 -2.1e33
2 E15N01
(-244",-105")
E26-W04
(30)
1.8 -0.3 -9.5e31
3 W24S27
(346",-532")
W21-W28
(7)
0.1 13.8 4.3e32

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 20-Sep-2013 23:35 UT .