5 August 2023
20230804 Week Rotation Today Rotation Week 20230806



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31N04
(-493",-22")
E45-E12
(33)
1.6 0.1 3.6e19
2 W12S44
(136",-726")
E07-W20
(27)
1.2 3.2 9.4e20
3 E11N62
(-85",784")
E17-E01
(16)
0.1 -0.7 -1.9e19

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 5-Aug-2023 23:30 UT .