12 December 2023
20231211 Week Rotation Today Rotation Week 20231213



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S49
(274",-735")
E18-W44
(62)
2.8 0.9 6.2e20
2 E46N12
(-691",215")
E60-E25
(35)
1.8 0.9 3.6e20
3 W17S13
(283",-204")
W05-W29
(24)
1.5 3.8 9.5e20
4 E03N10
(-48",175")
E10-W06
(16)
0.4 3.4 2.0e20
5 E48N48
(-490",725")
E51-E45
(6)
0.2 -1.3 -7.2e19
6 E21N50
(-220",759")
E24-E18
(6)
0.1 1.2 3.3e19
7 E17N37
(-223",600")
E18-E14
(4)
0.1 -2.9 -4.4e19

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 12-Dec-2023 20:30 UT .