24 September 2013
20130923 Week Rotation Today Rotation Week 20130925



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E41N46
(-432",623")
E53-E27
(26)
0.9 1.6 1.1e33
2 E00N67
(-2",828")
E15-W21
(36)
0.4 -0.4 -2.0e32
3 W60N46
(575",645")
W53-W65
(12)
0.2 -0.7 -2.6e32
4 W63N25
(779",348")
W58-W69
(11)
0.2 -1.8 -4.4e32

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 24-Sep-2013 23:35 UT .