19 April 2023
20230418 Week Rotation Today Rotation Week 20230420



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E24S52
(-241",-707")
E58-W23
(81)
4.0 -1.4 -1.4e21
2 W02S11
(40",-89")
E04-W06
(10)
0.4 -3.3 -2.1e20
3 E62S18
(-799",-257")
E66-E58
(8)
0.0 -3.4 -5.4e19

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 19-Apr-2023 23:30 UT .