30 December 2014
⇐20141229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20141231⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S57
(-176",-795") 		E58-W82
(140) 		8.7 -1.4 -1.1e34
2 W06N54
(63",817") 		E12-W39
(51) 		2.9 0.6 1.7e33

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 30-Dec-2014 22:35 UT .