21 November 2023
20231120 Week Rotation Today Rotation Week 20231122



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E29N15
(-457",219")
E40-E16
(24)
1.6 7.2 2.0e21
2 W45N16
(662",238")
W36-W55
(19)
0.9 2.6 5.4e20
3 W43N67
(259",885")
W37-W49
(12)
0.1 -0.5 -1.5e19
4 E11N24
(-175",357")
E13-E09
(4)
0.0 -1.0 -8.2e18
5 E06N14
(-100",194")
E08-E03
(5)
0.0 4.7 3.0e19

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 21-Nov-2023 20:30 UT .