4 April 2023
⇐20230403 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230405⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E45N11
(-662",255") 		E58-E34
(24) 		0.9 3.1 6.2e20
2 W17S65
(123",-819") 		W12-W23
(11) 		0.1 -2.4 -3.8e19

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 4-Apr-2023 23:30 UT .