21 October 2013
20131020 Week Rotation Today Rotation Week 20131022



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W51N39
(586",556")
W44-W70
(26)
0.9 -0.9 -8.2e32
2 W25S55
(232",-832")
W03-W46
(43)
0.9 -0.5 -6.5e32
3 E06N70
(-33",873")
E35-W15
(50)
0.8 0.5 6.7e32
4 W32N04
(510",-9")
W23-W39
(16)
0.7 -1.3 -2.9e32
5 E32S23
(-477",-442")
E36-E28
(8)
0.1 12.6 7.4e32

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 21-Oct-2013 23:35 UT .