22 April 2024
20240421 Week Rotation Today Rotation Week 20240423



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E37S35
(-473",-494")
E55-E21
(34)
1.7 4.9 1.8e21
2 -184
(-46",E00S08")
22
(2.2e04)
3.8 10.5 2.3e21
3 W07N52
(73",799")
E10-W20
(30)
0.6 -1.0 -1.6e20
4 E12S18
(-189",-212")
E15-E09
(6)
0.1 5.0 1.0e20
5 E30N57
(-258",835")
E34-E24
(10)
0.1 -1.4 -4.5e19
6 E34S54
(-309",-734")
E39-E27
(12)
0.1 -1.6 -3.8e19

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 22-Apr-2024 23:30 UT .