21 September 2013
⇐20130920 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130922⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25N45
(279",603") 		E26-W34
(60) 		5.4 -1.2 -3.2e33
2 W07N01
(115",-105") 		E15-W20
(35) 		1.8 -0.1 -3.6e31

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 21-Sep-2013 23:35 UT .