22 February 2014
20140221 Week Rotation Today Rotation Week 20140223



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20N49
(216",797")
E58-W76
(134)
4.5 0.4 1.7e33
2 W17S02
(285",80")
W07-W26
(19)
0.7 4.1 6.6e32
3 E50S22
(-691",-296")
E67-E40
(27)
0.5 -3.1 -1.1e33
4 E32N03
(-519",148")
E37-E29
(8)
0.2 -4.2 -3.3e32
5 W58S71
(262",-892")
W47-W70
(23)
0.1 -1.0 -2.4e32

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 22-Feb-2014 20:35 UT .