18 June 2023
20230617 Week Rotation Today Rotation Week 20230619



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W45N06
(664",79")
W22-W72
(50)
3.2 -0.3 -2.0e20
2 W18S33
(244",-531")
W02-W29
(27)
3.1 -3.2 -1.9e21
3 W38N38
(466",561")
W23-W55
(32)
1.2 1.9 5.8e20
4 E59N38
(-645",568")
E69-E48
(21)
0.3 -1.3 -1.5e20

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 18-Jun-2023 23:30 UT .