13 May 2023
20230512 Week Rotation Today Rotation Week 20230514



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E10N45
(-111",708")
E42-W17
(59)
1.0 2.7 6.3e20
2 W26S43
(309",-615")
W20-W35
(15)
0.5 2.5 2.5e20
3 W39N31
(512",522")
W34-W46
(12)
0.3 7.2 4.3e20
4 W27N36
(357",588")
W23-W32
(9)
0.2 3.9 1.7e20
5 W27S09
(432",-103")
W25-W29
(4)
0.1 4.8 8.2e19
6 W16S43
(194",-613")
W14-W19
(5)
0.1 1.5 2.6e19
7 W08N49
(84",745")
W04-W10
(6)
0.1 -0.9 -1.4e19

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 13-May-2023 23:30 UT .