28 April 2012
⇐20120427 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120429⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40S70
(-214",-872") 		E68-W71
(139) 		1.7 0.7 3.1e33
2 W16N28
(234",513") 		E02-W24
(26) 		1.0 1.6 6.3e32

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 28-Apr-2012 23:00 UT .