22 April 2015
⇐20150421 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150423⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E05N56
(-42",833") 		E24-W18
(42) 		1.7 0.4 7.8e32
2 E41S72
(-199",-883") 		E80-W73
(153) 		1.4 -1.0 -4.2e33
3 W57S21
(750",-295") 		W50-W62
(12) 		0.3 1.7 5.9e32

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 22-Apr-2015 23:35 UT .