25 December 2023
20231224 Week Rotation Today Rotation Week 20231226



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E52S14
(-742",-219")
E72-E38
(34)
2.1 -1.6 -8.7e20
2 E07S59
(-60",-817")
E11-E01
(10)
0.1 2.3 6.0e19
3 E49N57
(-398",835")
E50-E52
(-2)
0.1 -1.1 -3.2e19
4 E67N50
(-583",753")
E77-E65
(12)
0.0 0.3 7.6e18

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 25-Dec-2023 20:30 UT .