30 January 2022
20220129 Week Rotation Today Rotation Week 20220131



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E36S12
(-564",-122")
E45-E25
(20)
2.2 -1.0 -4.2e20
2 E12S10
(-201",-64")
E21-W04
(25)
1.4 0.1 2.6e19
3 E55S34
(-662",-501")
E63-E47
(16)
0.5 -1.8 -2.5e20
4 E06S27
(-94",-351")
E10-E02
(8)
0.2 -0.9 -2.6e19
5 W18N04
(299",171")
W15-W21
(6)
0.1 -0.9 -1.1e19

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 30-Jan-2022 20:30 UT .