20 January 2024
20240119 Week Rotation Today Rotation Week 20240121



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E40S60
(-310",-814")
E46-E35
(11)
0.1 0.3 1.4e19
2 W37N19
(559",379")
W32-W42
(10)
0.1 14.3 3.9e20
3 E12S24
(-193",-322")
E15-E11
(4)
0.1 -3.6 -4.7e19
4 W07S74
(33",-913")
E09-W16
(25)
0.1 -0.6 -2.2e19
5 E70S17
(-880",-253")
E76-E63
(13)
0.1 -1.0 -3.5e19

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-Jan-2024 20:30 UT .