4 October 2023
⇐20231003 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231005⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E43S23
(-601",-451") 		E47-E36
(11) 		0.6 -9.1 -1.4e21
2 E24S21
(-371",-438") 		E29-E20
(9) 		0.2 -12.8 -4.0e20

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 4-Oct-2023 23:30 UT .