2 April 2023
20230401 Week Rotation Today Rotation Week 20230403



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W23S14
(365",-136")
W11-W31
(20)
0.5 -13.8 -1.3e21
2 W33N30
(458",552")
W25-W42
(17)
0.5 -6.7 -8.0e20
3 W71S00
(906",34")
W63-W81
(18)
0.2 -1.0 -7.7e19

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 2-Apr-2023 23:30 UT .