19 December 2013
⇐20131218 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131220⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E49N47
(-505",725") 		E77-E08
(69) 		3.4 0.6 3.1e33
2 E39N26
(-556",450") 		E45-E31
(14) 		0.9 4.0 2.2e33

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 19-Dec-2013 20:35 UT .