1 June 2012
20120531 Week Rotation Today Rotation Week 20120602



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E36N20
(-520",328")
E59-E10
(49)
5.9 -3.5 -9.0e33
2 W40N47
(411",702")
W11-W61
(50)
2.9 0.5 1.6e33
3 E27S25
(-390",-396")
E30-E22
(8)
0.6 -1.6 -3.3e32

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 1-Jun-2012 23:00 UT .