3 February 2015
20150202 Week Rotation Today Rotation Week 20150204



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W47S58
(382",-781")
E58-W65
(123)
6.3 -1.8 -1.6e34
2 E32N44
(-375",736")
E42-E16
(26)
1.7 1.1 2.0e33
3 W26S34
(358",-460")
W24-W28
(4)
0.1 -3.3 -7.9e31
4 E36N04
(-577",148")
E39-E33
(6)
0.0 2.9 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 3-Feb-2015 22:35 UT .