27 September 2024
⇐20240926 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240928⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W38N65
(251",822") 		W02-W45
(43) 		1.6 -0.8 -4.4e20
2 W23N14
(370",121") 		W21-W25
(4) 		0.2 -0.9 -2.6e19
3 W30S08
(472",-238") 		W26-W34
(8) 		0.2 -9.9 -3.1e20
4 W40N05
(612",3") 		W38-W42
(4) 		0.1 -4.8 -1.1e20
5 E02S15
(-33",-364") 		E04-W01
(5) 		0.1 -17.2 -3.1e20
6 W10S48
(113",-782") 		W03-W14
(11) 		0.1 2.5 6.1e19

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 27-Sep-2024 23:30 UT .