16 August 2023
20230815 Week Rotation Today Rotation Week 20230817



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W46S22
(637",-426")
W39-W57
(18)
0.4 -9.1 -8.5e20
2 W05N04
(87",-51")
W01-W09
(8)
0.2 -5.4 -1.7e20
3 E16N41
(-193",543")
E19-E12
(7)
0.1 -3.8 -6.9e19
4 W63N68
(313",855")
W58-W72
(14)
0.1 -0.4 -1.4e19
5 W16S09
(264",-254")
W16-W17
(1)
0.0 -4.2 -2.6e19

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 16-Aug-2023 23:30 UT .