23 April 2024
⇐20240422 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240424⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27S42
(-321",-582") 		E43-E05
(38) 		2.1 4.1 1.8e21
2 W19S05
(318",-1") 		W10-W26
(16) 		0.9 3.2 4.8e20
3 W25N52
(249",795") 		W01-W35
(34) 		0.9 -1.0 -2.8e20
4 W05S22
(72",-275") 		E05-W11
(16) 		0.8 4.7 5.6e20
5 E54N10
(-760",219") 		E64-E43
(21) 		0.5 -0.4 -5.0e19
6 E21N57
(-187",841") 		E37-E03
(34) 		0.3 -1.1 -1.2e20
7 E51N57
(-406",822") 		E67-E41
(26) 		0.2 -0.3 -3.3e19
8 E62N27
(-748",467") 		E68-E59
(9) 		0.1 -2.9 -1.4e20

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 23-Apr-2024 23:30 UT .