23 July 2021
⇐20210722 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210724⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W27S08
(430",-207") 		E18-W63
(81) 		11.5 -0.0 -4.7e19
2 E08N57
(-75",741") 		E86-W78
(164) 		5.8 1.0 1.4e21
3 E18N17
(-276",190") 		E22-E12
(10) 		0.3 6.0 3.2e20
4 E25S15
(-381",-324") 		E29-E20
(9) 		0.2 -1.9 -7.2e19
5 E35S67
(-209",-895") 		E40-E26
(14) 		0.1 -0.2 -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 23-Jul-2021 23:30 UT .