21 April 2023
⇐20230420 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230422⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E00S54
(-4",-726") 		E52-W38
(90) 		4.0 -1.5 -1.4e21
2 E41S07
(-628",-51") 		E67-E24
(43) 		3.0 -1.8 -1.1e21

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-Apr-2023 23:30 UT .