4 February 2016
⇐20160203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20160205⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19N09
(-321",252") 		E29-E11
(18) 		1.4 -3.7 -1.4e33
2 W55N43
(578",708") 		W52-W77
(25) 		0.9 0.7 1.6e33
3 W26N59
(222",877") 		W07-W38
(31) 		0.8 0.5 7.8e32
4 W60N30
(728",532") 		W55-W65
(10) 		0.2 1.7 5.5e32

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 4-Feb-2016 21:30 UT .