22 May 2012
⇐20120521 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120523⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27S11
(-426",-156") 		E41-E16
(25) 		1.4 0.4 1.6e32
2 W35S10
(533",-137") 		W24-W41
(17) 		0.9 -2.5 -7.8e32
3 E52S58
(-397",-792") 		E64-E70
(-6) 		0.4 0.7 6.1e32
4 W11N24
(172",417") 		W07-W17
(10) 		0.3 -4.7 -4.6e32

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-May-2012 23:00 UT .