31 March 2012
20120330 Week Rotation Today Rotation Week 20120401



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E13N40
(-170",696")
E26-W03
(29)
1.5 1.6 1.5e33
2 E45S37
(-537",-517")
E59-E31
(28)
0.7 3.3 1.5e33
3 W10N23
(158",472")
W03-W15
(12)
0.5 1.5 2.5e32
4 E34N06
(-534",186")
E36-E31
(5)
0.1 -4.7 -1.2e32

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 31-Mar-2012 23:00 UT .