17 October 2012
20121016 Week Rotation Today Rotation Week 20121018



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40N25
(565",333")
W30-W68
(38)
2.2 -2.6 -2.8e33
2 E15N21
(-233",265")
E21-E09
(12)
0.4 -10.8 -9.7e32
3 E26S23
(-385",-451")
E31-E19
(12)
0.3 9.7 1.2e33
4 W37N43
(423",600")
W30-W43
(13)
0.2 -1.1 -1.7e32

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 17-Oct-2012 21:00 UT .