18 October 2024
20241017 Week Rotation Today Rotation Week 20241019



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W50N29
(643",415")
W29-W71
(42)
2.0 3.5 1.8e21
2 W02N09
(34",64")
E11-W12
(23)
0.8 5.9 7.7e20
3 W21N37
(271",506")
W17-W24
(7)
0.2 5.7 1.8e20
4 W34S27
(477",-512")
W31-W37
(6)
0.1 -13.4 -3.6e20
5 W04N54
(35",720")
E03-W07
(10)
0.1 -3.3 -5.7e19

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 18-Oct-2024 23:30 UT .