20 March 2025
20250319 Week Rotation Today Rotation Week 20250321



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E51S44
(-541",-609")
E84-E36
(48)
8.4 1.4 3.4e21
2 E50S07
(-734",-45")
E65-E31
(34)
2.1 2.4 1.2e21
3 W17S01
(285",97")
W06-W28
(22)
1.3 -5.0 -1.1e21
4 E21S50
(-223",-658")
E27-E14
(13)
0.2 1.5 5.3e19
5 W09N09
(141",263")
W07-W10
(3)
0.1 -10.6 -9.2e19

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 20-Mar-2025 20:30 UT .