17 January 2023
⇐20230116 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230118⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E42S64
(-288",-847") 		E78-E07
(71) 		1.5 -0.2 -9.4e19
2 E55S08
(-792",-81") 		E64-E47
(17) 		0.4 1.4 1.4e20
3 W17N42
(207",706") 		W12-W20
(8) 		0.1 -0.5 -1.5e19
4 E19N22
(-289",432") 		E21-E15
(6) 		0.1 11.4 2.1e20
5 E17S64
(-124",-844") 		E23-E10
(13) 		0.1 1.3 3.3e19
6 W18S06
(297",-31") 		W16-W19
(3) 		0.1 3.4 3.7e19
7 E28N73
(-131",952") 		E47-E16
(31) 		0.1 1.6 9.0e19
8 E20S58
(-173",-784") 		E22-E16
(6) 		0.0 -0.8 -8.3e18
9 W16N53
(159",825") 		W14-W19
(5) 		0.0 -0.8 -1.0e19

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 17-Jan-2023 20:30 UT .