28 January 2023
20230127 Week Rotation Today Rotation Week 20230129



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E26S67
(-165",-859")
E43-W60
(103)
1.8 -0.7 -4.3e20
2 E01S16
(-19",-175")
E11-W13
(24)
1.2 -3.7 -6.7e20
3 E20N40
(-260",691")
E37-E02
(35)
0.9 -2.2 -4.7e20
4 E14S20
(-220",-238")
E16-E09
(7)
0.1 -7.9 -7.1e19

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 28-Jan-2023 20:30 UT .