22 May 2024
20240521 Week Rotation Today Rotation Week 20240523



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W18N53
(182",769")
E36-W39
(75)
5.5 -1.8 -2.7e21
2 E17S65
(-120",-845")
E43-W12
(55)
1.3 0.6 2.9e20
3 E18S39
(-233",-575")
E34-E02
(32)
1.1 4.4 9.8e20
4 E43S56
(-361",-775")
E45-E33
(12)
0.3 0.3 3.4e19
5 W18N21
(268",364")
W14-W23
(9)
0.2 -14.9 -6.1e20
6 E24S52
(-236",-729")
E29-E19
(10)
0.1 -1.5 -2.7e19

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-May-2024 23:30 UT .