4 September 2017
⇐20170903 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170905⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13N69
(78",840") 		E90-W75
(165) 		3.5 0.9 4.2e33
2 E29S23
(-420",-463") 		E46-E06
(40) 		1.6 -1.8 -1.3e33

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 4-Sep-2017 19:30 UT .