20 October 2010
20101019 Week Rotation Today Rotation Week 20101021



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30N12
(-468",121")
E42-W00
(42)
4.7 -3.8 -5.4e33
2 W25N21
(379",267")
W18-W33
(15)
0.8 -3.1 -6.9e32
3 W12S68
(75",-925")
E15-W33
(48)
0.4 0.7 1.1e33

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-Oct-2010 23:30 UT .