17 December 2023
20231216 Week Rotation Today Rotation Week 20231218



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22N15
(349",270")
E08-W44
(52)
4.9 1.6 1.3e21
2 E29S36
(-384",-565")
E48-E03
(45)
2.3 -3.6 -1.8e21
3 E05S48
(-58",-708")
E10-E01
(9)
0.1 -0.7 -9.8e18
4 E01S31
(-15",-480")
E03-W02
(5)
0.1 -2.6 -2.4e19
5 W17N03
(291",77")
W15-W19
(4)
0.0 4.2 2.4e19

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 17-Dec-2023 20:30 UT .