6 February 2023
20230205 Week Rotation Today Rotation Week 20230207



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40N11
(613",259")
W10-W54
(44)
3.5 -2.0 -1.5e21
2 W34N45
(383",750")
W24-W46
(22)
0.5 -3.9 -6.2e20
3 W27N10
(435",259")
W24-W29
(5)
0.1 1.1 1.9e19
4 W42N26
(587",495")
W39-W44
(5)
0.1 -15.5 -2.2e20
5 W38N30
(525",554")
W36-W41
(5)
0.0 -14.8 -1.5e20

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 6-Feb-2023 20:30 UT .