21 July 2023
⇐20230720 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230722⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W40S13
(597",-269") 		W37-W44
(7) 		0.1 -1.5 -3.9e19
2 W51S10
(724",-213") 		W49-W54
(5) 		0.1 -2.0 -5.3e19

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 21-Jul-2023 23:30 UT .