28 July 2023
20230727 Week Rotation Today Rotation Week 20230729



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18N55
(-170",721")
E38-W06
(44)
0.8 -1.1 -2.2e20
2 E08N27
(-116",352")
E16-E00
(16)
0.4 2.0 1.4e20
3 W07N69
(43",848")
E17-W36
(53)
0.4 0.3 3.3e19
4 W08N44
(92",592")
E00-W11
(11)
0.2 -0.7 -2.3e19
5 W13N40
(157",536")
W09-W15
(6)
0.0 -0.6 -5.0e18

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 28-Jul-2023 23:30 UT .