22 August 2013
20130821 Week Rotation Today Rotation Week 20130823



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E09N14
(-151",112")
19
(5.2e04)
-0.4 9.4 4.9e33
2 W14S31
(192",-579")
W02-W22
(20)
0.8 5.7 1.9e33
3 E05N43
(-59",566")
E09-W04
(13)
0.4 -0.6 -9.3e31
4 W49N07
(715",41")
W44-W54
(10)
0.3 4.1 8.4e32
5 W01N09
(15",34")
E01-W02
(3)
0.0 -1.1 -6.2e30

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 22-Aug-2013 21:00 UT .