19 May 2023
20230518 Week Rotation Today Rotation Week 20230520



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25S17
(-388",-252")
E40-W03
(43)
5.5 -3.0 -2.9e21
2 E12S50
(-124",-707")
E26-W09
(35)
2.2 -2.2 -1.1e21
3 W44S08
(652",-112")
W39-W47
(8)
0.3 -2.0 -1.3e20
4 W12S60
(95",-806")
W05-W23
(18)
0.2 0.4 2.4e19
5 W16N16
(254",290")
W14-W18
(4)
0.1 -5.0 -4.4e19
6 E43S20
(-612",-301")
E47-E40
(7)
0.0 -24.1 -2.7e20

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-May-2023 23:30 UT .