30 October 2023
⇐20231029 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231031⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W49N21
(678",295") 		W43-W58
(15) 		2.1 3.9 2.0e21
2 E67S22
(-828",-388") 		E74-E61
(13) 		0.2 -2.7 -2.2e20

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 30-Oct-2023 20:30 UT .