21 February 2023
⇐20230220 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230222⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02S54
(15",-716") 		E59-W37
(96) 		5.9 -1.7 -2.3e21
2 E37S03
(-579",52") 		E50-E17
(33) 		4.2 -0.8 -6.7e20
3 W56S13
(790",-148") 		W51-W63
(12) 		0.3 3.1 2.5e20

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-Feb-2023 20:30 UT .