14 September 2023
20230913 Week Rotation Today Rotation Week 20230915



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E19S43
(-229",-728")
E34-E05
(29)
0.8 3.8 7.9e20
2 W40N05
(607",-16")
W35-W43
(8)
0.3 -6.4 -3.6e20
3 W53N41
(572",567")
W48-W56
(8)
0.1 0.5 8.3e18
4 E06N38
(-75",491")
E08-E00
(8)
0.1 -2.7 -3.0e19
5 E18N54
(-171",700")
E20-E16
(4)
0.0 -3.2 -3.5e19

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 14-Sep-2023 23:30 UT .