16 December 2015
20151215 Week Rotation Today Rotation Week 20151217



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42N21
(610",355")
W13-W55
(42)
1.3 -6.0 -4.5e33
2 W11N30
(156",501")
W08-W12
(4)
0.1 -6.0 -1.2e32
3 W04N35
(57",574")
W02-W06
(4)
0.0 -10.8 -1.8e32

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 16-Dec-2015 21:35 UT .