18 March 2023
20230317 Week Rotation Today Rotation Week 20230319



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E43S44
(-472",-606")
E75-E04
(71)
6.9 -1.6 -2.7e21
2 W32S23
(469",-273")
W17-W43
(26)
1.0 9.9 1.8e21
3 E17S15
(-265",-142")
E20-E11
(9)
0.2 -1.2 -3.8e19
4 E08S04
(-140",43")
E10-E06
(4)
0.1 3.3 6.3e19

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-Mar-2023 20:30 UT .