20 December 2011
⇐20111219 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20111221⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E62S46
(-596",-693") 		E75-E49
(26) 		0.4 0.3 3.0e32
2 W53N14
(754",252") 		W47-W58
(11) 		0.2 -3.8 -6.6e32
3 W55N09
(790",163") 		W53-W57
(4) 		0.0 -3.4 -1.0e32

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-Dec-2011 16:41 UT .