19 January 2012
⇐20120118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120120⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S08
(-304",-65") 		E23-E14
(9) 		0.5 -1.7 -1.7e32
2 W19S08
(318",-54") 		W16-W23
(7) 		0.1 2.6 8.4e31

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 19-Jan-2012 22:00 UT .