1 February 2022
20220131 Week Rotation Today Rotation Week 20220202



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E08S08
(-138",-33")
E16-W09
(25)
3.3 -0.9 -4.7e20
2 E29S35
(-385",-486")
E44-E11
(33)
1.9 -1.1 -4.2e20
3 W24S05
(399",10")
W09-W42
(33)
1.4 -0.1 -2.5e19
4 E39N35
(-504",618")
E47-E34
(13)
0.3 1.3 9.8e19
5 E39S28
(-549",-378")
E42-E37
(5)
0.1 -3.3 -8.5e19
6 E05N14
(-77",340")
E06-E02
(4)
0.1 -2.4 -2.9e19
7 W11S12
(188",-100")
W08-W14
(6)
0.0 4.0 2.2e19

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 1-Feb-2022 20:30 UT .