2 October 2023
20231001 Week Rotation Today Rotation Week 20231003



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W62N37
(674",537")
W51-W81
(30)
0.6 2.6 5.2e20
2 E58N52
(-501",712")
E68-E52
(16)
0.3 -0.3 -3.0e19
3 E48S18
(-679",-372")
E55-E43
(12)
0.2 -7.6 -3.9e20
4 W25S52
(248",-813")
W22-W28
(6)
0.1 2.0 4.3e19
5 W14N62
(114",787")
W09-W18
(9)
0.1 -1.3 -2.2e19

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 2-Oct-2023 23:30 UT .