4 January 2015
⇐20150103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150105⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S55
(233",-773") 		E43-W83
(126) 		8.7 -2.3 -1.8e34
2 E51N25
(-682",450") 		E59-E33
(26) 		2.5 1.3 3.0e33

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-Jan-2015 22:35 UT .