23 February 2025
20250222 Week Rotation Today Rotation Week 20250224



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31S48
(-328",-650")
E64-W32
(96)
10.4 2.3 5.5e21
2 E36N15
(-551",342")
E49-E15
(34)
5.1 3.0 3.3e21
3 E12N07
(-199",232")
E17-E06
(11)
0.5 2.0 1.7e20
4 W31N18
(481",391")
W27-W37
(10)
0.4 -10.8 -7.9e20
5 E30N43
(-361",730")
E34-E27
(7)
0.1 1.5 3.5e19
6 E08N13
(-133",327")
E10-E06
(4)
0.1 3.6 4.0e19

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 23-Feb-2025 04:30 UT .