21 September 2023
⇐20230920 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230922⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20N45
(224",600") 		E14-W43
(57) 		2.0 -3.0 -1.3e21
2 W36N11
(552",90") 		W30-W41
(11) 		0.9 -2.0 -3.5e20
3 E26N70
(-141",856") 		E42-W02
(44) 		0.3 0.3 2.8e19

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 21-Sep-2023 23:30 UT .