23 January 2024
20240122 Week Rotation Today Rotation Week 20240124



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E39N38
(-490",651")
E52-E12
(40)
2.2 -3.3 -2.0e21
2 E41S19
(-604",-258")
E65-E21
(44)
2.1 -4.6 -2.0e21
3 W40N02
(622",106")
W36-W42
(6)
0.2 -4.4 -1.5e20
4 W20N06
(331",190")
W18-W21
(3)
0.0 -1.3 -9.8e18
5 E03N61
(-27",893")
E07-W03
(10)
0.0 -1.0 -1.8e19

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 23-Jan-2024 20:30 UT .