9 September 2017
⇐20170908 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170910⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E37N34
(-481",451") 		E61-E10
(51) 		4.8 3.1 7.4e33
2 E35N70
(-186",856") 		E90-W60
(150) 		2.6 0.9 4.5e33
3 W56N66
(325",834") 		W46-W91
(45) 		0.9 0.7 1.6e33
4 W38S28
(513",-533") 		W27-W49
(22) 		0.7 -1.0 -4.9e32
5 W03S71
(17",-933") 		E14-W16
(30) 		0.1 -1.4 -1.0e33
6 W54S23
(707",-432") 		W51-W57
(6) 		0.1 -1.9 -1.5e32

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 9-Sep-2017 19:30 UT .