13 September 2024
20240912 Week Rotation Today Rotation Week 20240914



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W16S37
(217",-658")
E08-W30
(38)
3.7 5.9 4.8e21
2 W32N56
(282",728")
E09-W47
(56)
3.2 -1.7 -1.5e21
3 E49N31
(-622",418")
E58-E42
(16)
0.2 7.3 4.5e20
4 E15N13
(-238",100")
E17-E12
(5)
0.1 4.8 1.0e20
5 W46N51
(434",685")
W45-W47
(2)
0.0 -1.9 -2.5e19

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 13-Sep-2024 23:30 UT .