16 May 2023
20230515 Week Rotation Today Rotation Week 20230517



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E50S47
(-499",-675")
E63-E35
(28)
1.1 -1.6 -5.6e20
2 E64S19
(-807",-297")
E71-E53
(18)
0.6 -1.5 -2.9e20
3 E01S17
(-21",-231")
E04-W02
(6)
0.4 -2.4 -1.4e20

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 16-May-2023 23:30 UT .