25 April 2015
20150424 Week Rotation Today Rotation Week 20150426



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E01S72
(-4",-877")
E81-W81
(162)
1.8 -1.1 -3.7e33
2 W40N51
(386",778")
W33-W46
(13)
0.8 0.3 4.2e32
3 E37S09
(-573",-90")
E47-E26
(21)
0.8 8.1 2.4e33
4 E62N35
(-692",574")
E69-E55
(14)
0.6 0.8 1.3e33

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 25-Apr-2015 23:35 UT .