30 July 2023
⇐20230729 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230731⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E10N33
(-133",436") 		E18-W06
(24) 		0.6 3.0 3.0e20
2 W24N50
(244",664") 		W15-W29
(14) 		0.2 -0.7 -3.9e19
3 E02N23
(-24",287") 		E03-W01
(4) 		0.1 -1.0 -1.5e19

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 30-Jul-2023 23:30 UT .