2 February 2023
⇐20230201 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230203⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E21N26
(-310",514") 		E32-W04
(36) 		6.4 -2.1 -2.5e21
2 W46S65
(293",-850") 		W44-W69
(25) 		1.2 -0.4 -2.0e20

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 2-Feb-2023 20:30 UT .