19 March 2023
20230318 Week Rotation Today Rotation Week 20230320



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S44
(-345",-597")
E60-W24
(84)
10.5 -1.7 -3.9e21
2 W39S23
(557",-282")
W10-W55
(45)
1.7 6.8 2.4e21
3 W16S09
(258",-31")
W06-W23
(17)
1.6 -0.0 -3.8e18
4 E41N06
(-629",185")
E45-E35
(10)
0.2 -0.9 -4.0e19

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 19-Mar-2023 20:30 UT .