1 February 2024
⇐20240131 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240202⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E09S44
(-109",-601") 		E26-W14
(40) 		4.8 1.5 1.4e21
2 W22N57
(202",865") 		W01-W35
(34) 		0.5 -0.9 -1.6e20
3 E08N47
(-96",783") 		E13-E03
(10) 		0.2 -0.6 -3.4e19
4 W35S17
(534",-211") 		W33-W38
(5) 		0.1 10.9 2.8e20
5 W18S32
(259",-426") 		W16-W20
(4) 		0.1 10.4 9.4e19

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 1-Feb-2024 20:30 UT .