14 January 2025
20250113 Week Rotation Today Rotation Week 20250115



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E15S19
(-241",-252")
E42-W28
(70)
6.4 -7.2 -7.2e21
2 W44S10
(673",-112")
W38-W51
(13)
0.3 -7.7 -4.5e20

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 14-Jan-2025 20:30 UT .