16 May 2015
20150515 Week Rotation Today Rotation Week 20150517



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W10S13
(166",-166")
E00-W20
(20)
1.8 15.5 5.7e33
2 W35S73
(161",-895")
E14-W77
(91)
0.9 -0.8 -2.6e33
3 W09S46
(97",-658")
W05-W12
(7)
0.1 -1.2 -4.4e31
4 E34S55
(-307",-753")
E35-E29
(6)
0.0 -1.8 -8.8e31

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 16-May-2015 23:35 UT .