25 March 2023
20230324 Week Rotation Today Rotation Week 20230326



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W42S51
(411",-685")
E85-W53
(138)
5.7 -1.8 -2.9e21
2 E37S01
(-578",75")
E53-E09
(44)
3.3 -0.8 -5.0e20
3 W32S14
(499",-135")
W31-W33
(2)
0.0 -5.2 -3.7e19

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 25-Mar-2023 20:30 UT .