20 May 2014
20140519 Week Rotation Today Rotation Week 20140521



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W18S55
(167",-757")
E69-W42
(111)
4.4 -0.6 -2.3e33
2 E37N45
(-404",696")
E52-E12
(40)
1.4 0.3 4.4e32
3 W14N53
(138",778")
W09-W20
(11)
0.2 -0.5 -8.2e31
4 E55N38
(-616",597")
E62-E50
(12)
0.1 -1.1 -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 20-May-2014 23:35 UT .