4 September 2023
20230903 Week Rotation Today Rotation Week 20230905



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11N39
(137",504")
E04-W19
(23)
0.6 -5.0 -5.5e20
2 W47N42
(522",572")
W35-W58
(23)
0.6 2.3 3.5e20
3 E68N36
(-714",516")
E73-E56
(17)
0.3 1.9 2.5e20
4 W30S49
(312",-777")
W22-W36
(14)
0.3 0.8 7.6e19
5 E14S13
(-231",-330")
E16-E12
(4)
0.1 -13.0 -1.2e20
6 E46N51
(-429",684")
E49-E43
(6)
0.1 -1.9 -2.9e19

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 4-Sep-2023 23:30 UT .