4 September 2012
⇐20120903 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120905⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E23N44
(-272",577") 		E54-E04
(50) 		2.2 1.0 9.8e32
2 E63N29
(-744",414") 		E68-E51
(17) 		0.3 -1.9 -8.4e32
3 W10S33
(142",-615") 		W07-W13
(6) 		0.1 9.0 5.1e32

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-2012 21:00 UT .