4 February 2017
⇐20170203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170205⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W37S57
(318",-771") 		E85-W76
(161) 		8.9 -1.3 -1.3e34
2 E19N09
(-317",255") 		E31-W10
(41) 		4.3 0.7 7.5e32
3 E39S05
(-615",5") 		E41-E37
(4) 		0.0 -1.3 -2.6e31

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 4-Feb-2017 20:30 UT .