31 October 2023
⇐20231030 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231101⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E57S21
(-759",-385") 		E65-E42
(23) 		1.9 -3.8 -2.3e21
2 W60N14
(810",195") 		W46-W67
(21) 		0.4 1.9 2.1e20
3 W63S01
(862",-46") 		W56-W69
(13) 		0.2 2.7 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 31-Oct-2023 20:30 UT .