19 January 2024
20240118 Week Rotation Today Rotation Week 20240120



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23N19
(354",398")
W14-W30
(16)
0.4 14.4 9.2e20
2 W35S34
(464",-489")
W31-W39
(8)
0.1 -4.8 -9.6e19
3 W12N28
(186",525")
W11-W14
(3)
0.1 11.4 1.4e20
4 E26S24
(-396",-330")
E28-E24
(4)
0.1 -5.4 -4.9e19

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 19-Jan-2024 20:30 UT .