17 March 2023
20230316 Week Rotation Today Rotation Week 20230318



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E53S44
(-557",-613")
E61-E18
(43)
4.5 -1.5 -2.0e21
2 W18S21
(282",-237")
E02-W30
(32)
1.9 7.4 2.3e21
3 E13S03
(-210",66")
E16-E10
(6)
0.1 -1.2 -2.9e19
4 W40N22
(577",443")
W36-W44
(8)
0.1 6.2 1.2e20
5 E27S18
(-415",-194")
E29-E25
(4)
0.0 -1.4 -1.1e19

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 17-Mar-2023 20:30 UT .