29 January 2024
20240128 Week Rotation Today Rotation Week 20240130



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E44S35
(-554",-499")
E60-E23
(37)
1.8 2.1 9.2e20
2 W34S26
(493",-351")
W23-W47
(24)
1.1 -7.2 -1.4e21
3 W47N37
(563",643")
W34-W63
(29)
0.9 -1.8 -5.0e20
4 E07S18
(-120",-215")
E11-E03
(8)
0.2 7.8 2.6e20
5 E05N15
(-82",349")
E08-E01
(7)
0.1 -2.1 -4.5e19
6 W17N08
(283",221")
W14-W19
(5)
0.1 -1.2 -2.4e19

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 29-Jan-2024 20:30 UT .