13 September 2023
20230912 Week Rotation Today Rotation Week 20230914



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S42
(-357",-713")
E42-E19
(23)
0.6 4.2 6.8e20
2 W26N06
(411",-15")
W21-W30
(9)
0.6 -6.8 -6.5e20
3 W57S21
(745",-408")
W49-W67
(18)
0.2 -6.9 -5.4e20
4 W54N36
(623",503")
W52-W55
(3)
0.0 7.4 8.8e19

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-2023 23:30 UT .