18 May 2015
20150517 Week Rotation Today Rotation Week 20150519



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N53
(-202",782")
E47-W06
(53)
2.3 0.7 1.7e33
2 W38S12
(576",-163")
W28-W54
(26)
1.6 7.5 4.8e33
3 W34S73
(152",-900")
W03-W50
(47)
0.4 -1.0 -1.7e33
4 W21S48
(225",-678")
W17-W24
(7)
0.1 -1.4 -4.6e31
5 W32S45
(354",-646")
W28-W34
(6)
0.0 -1.3 -3.3e31

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 18-May-2015 23:35 UT .