26 April 2023
20230425 Week Rotation Today Rotation Week 20230427



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29S06
(468",-39")
E04-W50
(54)
6.1 -2.0 -2.2e21
2 W48S59
(368",-787")
W29-W75
(46)
1.9 -0.9 -6.4e20
3 E18N29
(-262",522")
E30-E00
(30)
1.7 -7.2 -2.4e21
4 W17N36
(221",622")
W12-W23
(11)
0.1 -2.8 -8.8e19

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 26-Apr-2023 23:30 UT .