22 January 2024
20240121 Week Rotation Today Rotation Week 20240123



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E50S18
(-715",-240")
E67-E34
(33)
1.4 -3.3 -1.1e21
2 E50N37
(-595",636")
E64-E27
(37)
1.4 -2.5 -1.1e21
3 E31S60
(-249",-804")
E48-E10
(38)
0.4 0.4 5.7e19
4 W14S49
(152",-684")
W06-W20
(14)
0.3 -1.6 -1.2e20
5 W04S59
(36",-790")
E10-W14
(24)
0.3 0.9 6.1e19
6 W08N06
(128",198")
W03-W13
(10)
0.2 -1.4 -5.4e19
7 W27S49
(294",-684")
W22-W31
(9)
0.2 -1.0 -4.7e19
8 W25N03
(418",126")
W22-W28
(6)
0.2 -4.3 -1.4e20
9 W18S72
(93",-900")
E10-W33
(43)
0.2 -0.8 -5.6e19
10 E14N59
(-118",877")
E23-E06
(17)
0.2 -1.2 -7.4e19
11 E40S74
(-171",-917")
E81-E13
(68)
0.1 -0.3 -2.5e19
12 W20S46
(231",-636")
W17-W22
(5)
0.0 -5.0 -3.8e19

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 22-Jan-2024 20:30 UT .