26 April 2024
20240425 Week Rotation Today Rotation Week 20240427



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E29N43
(-345",694")
E47-W19
(66)
5.5 -1.7 -2.4e21
2 W18S36
(236",-501")
E01-W27
(28)
1.9 4.4 1.5e21
3 W37S25
(524",-351")
W33-W42
(9)
0.2 -0.7 -2.4e19
4 E43S24
(-591",-335")
E49-E35
(14)
0.2 -7.4 -2.4e20
5 W58S04
(805",-19")
W54-W62
(8)
0.1 0.5 1.4e19
6 W02N08
(25",202")
E01-W03
(4)
0.0 -2.8 -1.7e19

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 26-Apr-2024 15:30 UT .