1 September 2023
20230831 Week Rotation Today Rotation Week 20230902



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W12N46
(140",595")
W05-W17
(12)
0.7 1.8 2.6e20
2 E22S52
(-222",-812")
E34-E03
(31)
0.7 1.6 3.3e20
3 E33N37
(-414",491")
E43-E17
(26)
0.6 -3.6 -4.4e20

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 1-Sep-2023 23:30 UT .