15 August 2023
20230814 Week Rotation Today Rotation Week 20230816



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W32S21
(477",-421")
W22-W43
(21)
1.3 -5.9 -1.5e21
2 W48N71
(228",866")
W47-W54
(7)
0.2 1.0 1.1e20
3 W28N42
(329",563")
W23-W32
(9)
0.2 2.7 1.2e20
4 E10N04
(-172",-45")
E14-E07
(7)
0.2 -5.9 -1.8e20
5 E34N39
(-418",518")
E38-E31
(7)
0.1 -4.4 -7.8e19

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 15-Aug-2023 23:30 UT .