12 April 2023
⇐20230411 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230413⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W20S47
(225",-639") 		E02-W34
(36) 		1.7 2.7 1.0e21
2 W07N31
(94",570") 		E01-W11
(12) 		0.5 6.4 6.2e20
3 E26N45
(-295",733") 		E30-E21
(9) 		0.1 0.7 1.8e19

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 12-Apr-2023 23:30 UT .