18 November 2023
20231117 Week Rotation Today Rotation Week 20231119

NOAA
4 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W06N12
(101",164")
19
(2.4e04)
1.6 7.3 1.7e21
2 E22S38
(-286",-632")
E30-E14
(16)
0.6 -2.6 -3.6e20
3 E03N21
(-51",315")
E06-W04
(10)
0.4 7.0 5.1e20
4 W06N63
(46",850")
E05-W10
(15)
0.3 -0.3 -2.5e19
5 W37N33
(494",495")
W30-W44
(14)
0.2 -10.2 -4.1e20
6 W03N30
(37",456")
E00-W04
(4)
0.0 -9.9 -5.9e19

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 18-Nov-2023 20:30 UT .