23 September 2023
20230922 Week Rotation Today Rotation Week 20230924



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40N45
(433",612")
W08-W54
(46)
2.2 -2.4 -1.3e21
2 E26N52
(-260",688")
E38-E16
(22)
0.2 -1.0 -4.8e19
3 E06N45
(-69",590")
E10-W02
(12)
0.2 -2.4 -7.3e19
4 E61N38
(-658",538")
E71-E52
(19)
0.1 2.8 1.4e20
5 W38N56
(333",736")
W31-W43
(12)
0.1 -1.2 -3.8e19
6 E13N48
(-141",629")
E16-E10
(6)
0.0 -1.9 -1.9e19

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-Sep-2023 23:30 UT .