9 December 2023
⇐20231208 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20231210⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25S47
(-282",-714") 		E42-W13
(55) 		3.7 0.7 6.5e20
2 E33S20
(-499",-337") 		E42-E18
(24) 		2.8 2.1 1.2e21
3 W18N52
(181",771") 		E04-W29
(33) 		1.3 2.0 6.9e20

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 9-Dec-2023 20:30 UT .