24 April 2015
⇐20150423 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150425⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E08S72
(-40",-877") 		E82-W83
(165) 		1.8 -0.9 -3.0e33
2 W25N55
(234",819") 		W04-W33
(29) 		1.3 0.4 7.4e32
3 E51S09
(-734",-99") 		E60-E42
(18) 		0.5 7.6 2.8e33

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 24-Apr-2015 23:35 UT .