7 February 2023
⇐20230206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230208⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W44N00
(681",79") 		W28-W59
(31) 		1.4 -0.5 -1.4e20
2 W50N46
(514",746") 		W43-W58
(15) 		0.2 -2.0 -1.5e20
3 W67N10
(881",204") 		W62-W71
(9) 		0.1 -1.4 -7.9e19

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 7-Feb-2023 20:30 UT .