12 April 2024
⇐20240411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240413⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W29S29
(406",-394") 		W25-W33
(8) 		0.5 -12.1 -1.1e21
2 W34N34
(451",595") 		W22-W48
(26) 		0.5 2.2 2.4e20
3 E17S45
(-198",-612") 		E23-E08
(15) 		0.3 -0.8 -4.7e19
4 W18N30
(255",556") 		W11-W22
(11) 		0.3 9.1 4.5e20
5 W41S22
(579",-297") 		W36-W46
(10) 		0.1 -10.8 -2.3e20
6 W19S56
(177",-743") 		W16-W22
(6) 		0.0 -0.4 -4.1e18
7 E31S53
(-295",-713") 		E31-E29
(2) 		0.0 -0.5 -5.0e18

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 12-Apr-2024 23:30 UT .