18 May 2012
⇐20120517 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120519⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S08
(-306",-102") 		E31-E10
(21) 		1.4 -2.9 -9.5e32
2 W21N53
(201",781") 		W12-W32
(20) 		0.3 0.5 1.6e32

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 18-May-2012 23:00 UT .