25 September 2015
20150924 Week Rotation Today Rotation Week 20150926



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W38S51
(370",-798")
E30-W48
(78)
1.9 -2.3 -8.2e33
2 W46N11
(678",97")
W36-W54
(18)
0.7 -5.8 -2.2e33
3 E21S12
(-340",-300")
E25-E15
(10)
0.4 2.5 2.7e32
4 E29N25
(-417",303")
E30-E26
(4)
0.1 -0.7 -1.6e31
5 W34N18
(511",204")
W32-W36
(4)
0.1 -21.8 -4.1e32

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-Sep-2015 18:30 UT .