24 September 2015
⇐20150923 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150925⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21S48
(231",-775") 		E37-W37
(74) 		2.5 -2.4 -6.0e33
2 W32N11
(498",76") 		W22-W41
(19) 		1.4 -8.2 -3.6e33
3 W19N18
(302",191") 		W16-W23
(7) 		0.2 -19.4 -9.4e32

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-Sep-2015 18:30 UT .