22 October 2015
20151021 Week Rotation Today Rotation Week 20151023



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W52N11
(743",129")
W33-W64
(31)
0.8 -4.6 -2.7e33
2 W22N27
(321",366")
W16-W26
(10)
0.3 -6.1 -6.0e32
3 E21S72
(-109",-938")
E40-W01
(41)
0.1 -1.0 -1.0e33
4 E17N55
(-159",736")
E19-E13
(6)
0.1 -0.9 -4.7e31
5 W14S40
(173",-689")
W08-W17
(9)
0.1 -2.7 -1.0e32

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-Oct-2015 23:35 UT .