21 March 2023
⇐20230320 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230322⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E18S46
(-202",-614") 		E26-W22
(48) 		11.3 -2.2 -5.2e21
2 W48S10
(704",-93") 		W45-W50
(5) 		0.1 -0.7 -2.2e19

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-Mar-2023 20:30 UT .