23 September 2013
20130922 Week Rotation Today Rotation Week 20130924



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W49N38
(565",526")
W26-W58
(32)
2.0 -1.2 -2.0e33
2 E51N45
(-523",621")
E65-E39
(26)
0.6 1.2 7.0e32
3 E02N68
(-12",837")
E26-W22
(48)
0.3 0.3 1.5e32
4 W18N01
(293",-102")
W14-W21
(7)
0.2 -1.4 -5.5e31

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 23-Sep-2013 23:35 UT .