30 September 2023
20230929 Week Rotation Today Rotation Week 20231001



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W33N38
(409",508")
W17-W49
(32)
1.8 4.5 1.7e21
2 W04N06
(74",-12")
E01-W08
(9)
0.4 1.8 9.8e19
3 E09S54
(-87",-836")
E16-W01
(17)
0.4 0.7 7.6e19
4 E16N72
(-85",869")
E37-W08
(45)
0.3 0.6 8.0e19
5 W44S08
(663",-220")
W41-W46
(5)
0.1 -2.6 -7.2e19
6 W48N54
(422",722")
W35-W59
(24)
0.1 -0.6 -1.2e19

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 30-Sep-2023 23:30 UT .