19 May 2024
20240518 Week Rotation Today Rotation Week 20240520



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E31N52
(-305",763")
E76-W00
(76)
4.0 -1.4 -1.6e21
2 E50S34
(-600",-513")
E82-E30
(52)
1.1 3.2 9.5e20
3 E26N19
(-390",337")
E30-E18
(12)
0.3 -6.7 -4.2e20

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-May-2024 23:30 UT .