25 September 2023
20230924 Week Rotation Today Rotation Week 20230926



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E37N38
(-459",509")
E51-E19
(32)
1.0 4.3 1.0e21
2 W56N49
(517",676")
W42-W71
(29)
0.2 -1.1 -8.1e19
3 E09N55
(-84",710")
E15-W03
(18)
0.2 -1.6 -7.4e19
4 W07N52
(72",684")
W01-W13
(12)
0.1 -1.7 -4.3e19
5 W24N45
(270",600")
W20-W28
(8)
0.1 -1.5 -2.0e19
6 E21N53
(-202",694")
E23-E17
(6)
0.0 -1.4 -1.1e19

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-Sep-2023 23:30 UT .