31 January 2014
20140130 Week Rotation Today Rotation Week 20140201



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N51
(217",816")
E11-W58
(69)
2.4 0.1 1.8e32
2 W19N26
(279",513")
W10-W24
(14)
0.5 1.1 2.1e32
3 E37N56
(-326",849")
E43-E41
(2)
0.2 -0.3 -1.4e32
4 W05S63
(35",-815")
E01-W09
(10)
0.1 -0.9 -5.3e31

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 31-Jan-2014 20:35 UT .