18 October 2015
⇐20151017 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20151019⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24N17
(-376",200") 		E51-W08
(59) 		2.6 -6.8 -4.9e33
2 W63N61
(417",817") 		W42-W68
(26) 		0.6 0.3 5.5e32
3 W60S10
(823",-219") 		W47-W74
(27) 		0.6 2.0 1.6e33
4 W71N35
(747",526") 		W60-W79
(19) 		0.3 0.5 5.0e32

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 18-Oct-2015 18:30 UT .