21 December 2013
⇐20131220 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131222⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N44
(-323",696") 		E50-W38
(88) 		7.4 1.2 6.4e33
2 W29S56
(262",-796") 		E06-W50
(56) 		1.1 -0.9 -1.1e33

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 21-Dec-2013 20:35 UT .