17 February 2023
⇐20230216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230218⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E41S60
(-320",-790") 		E65-W16
(81) 		3.5 -1.1 -1.2e21
2 W00S14
(6",-118") 		E13-W16
(29) 		2.2 2.9 9.7e20
3 E53S34
(-639",-483") 		E55-E49
(6) 		0.1 -3.8 -6.8e19

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 17-Feb-2023 20:30 UT .