23 December 2022
⇐20221222 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20221224⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E30S59
(-254",-818") 		E54-E07
(47) 		1.7 -0.2 -1.0e20
2 W39N05
(611",107") 		W27-W49
(22) 		1.3 0.5 1.4e20
3 E55N37
(-637",600") 		E59-E44
(15) 		0.8 2.0 5.6e20
4 W16N15
(262",289") 		W11-W21
(10) 		0.4 5.5 3.9e20
5 E49N15
(-713",273") 		E55-E43
(12) 		0.3 3.4 2.4e20
6 E36N13
(-562",243") 		E39-E33
(6) 		0.2 3.3 1.3e20
7 E28N14
(-453",267") 		E33-E23
(10) 		0.2 1.4 4.9e19
8 W31S00
(509",25") 		3
(8.4e02) 		-0.8 5.6 4.7e19

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 23-Dec-2022 20:30 UT .