15 December 2023
⇐20231214 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231216⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E12N15
(-197",271") 		E24-W17
(41) 		4.3 1.2 8.1e20
2 E52S34
(-642",-534") 		E68-E32
(36) 		1.4 -2.4 -9.9e20
3 W31N31
(432",520") 		W25-W36
(11) 		0.2 -5.4 -2.4e20

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 15-Dec-2023 20:30 UT .