20 October 2013
20131019 Week Rotation Today Rotation Week 20131021



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W35N41
(414",571")
W17-W65
(48)
2.4 -1.2 -1.6e33
2 W07S57
(64",-852")
E19-W22
(41)
1.2 -0.4 -6.6e32
3 W17N05
(286",-12")
W07-W24
(17)
0.8 -1.7 -2.8e32
4 E12N69
(-72",861")
E50-W08
(58)
0.5 0.4 2.9e32
5 W36N64
(253",828")
W15-W52
(37)
0.4 0.5 2.9e32
6 W57N17
(775",233")
W53-W63
(10)
0.1 -2.9 -3.0e32
7 W07S31
(108",-571")
W06-W09
(3)
0.1 -3.2 -6.2e31

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-Oct-2013 23:35 UT .