16 September 2024
⇐20240915 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240917⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W65N58
(462",775") 		W45-W82
(37) 		0.8 -0.6 -2.4e20
2 E06N31
(-88",383") 		E13-W05
(18) 		0.4 5.9 4.3e20
3 W57S38
(627",-640") 		W52-W58
(6) 		0.4 4.3 6.8e20
4 E23N34
(-315",444") 		E31-E14
(17) 		0.3 11.0 5.3e20
5 W31N06
(492",4") 		W28-W34
(6) 		0.2 2.7 1.1e20
6 E03N42
(-40",550") 		E06-W01
(7) 		0.1 -2.8 -5.6e19
7 W18N46
(202",607") 		W15-W21
(6) 		0.0 -1.7 -1.4e19

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 16-Sep-2024 23:30 UT .