23 December 2023
20231222 Week Rotation Today Rotation Week 20231224



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23N64
(167",891")
E11-W34
(45)
0.5 -0.4 -9.1e19
2 W49S39
(577",-594")
W40-W60
(20)
0.2 -2.8 -1.9e20
3 E29S56
(-267",-792")
E36-E23
(13)
0.1 2.1 6.0e19
4 E70S02
(-916",-18")
E75-E65
(10)
0.1 -0.9 -2.0e19

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 23-Dec-2023 20:30 UT .