26 April 2024
⇐20240425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240427⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E25N44
(-286",709") 		E43-W26
(69) 		4.6 -1.7 -2.1e21
2 W22S36
(295",-498") 		W08-W32
(24) 		1.5 4.3 1.2e21
3 E21S03
(-336",22") 		E25-E17
(8) 		0.5 -2.1 -1.9e20
4 W22S57
(196",-763") 		W14-W30
(16) 		0.2 0.9 4.9e19
5 E38S24
(-535",-337") 		E44-E31
(13) 		0.1 -5.4 -1.6e20
6 W04N10
(70",244") 		W00-W07
(7) 		0.1 -3.8 -5.7e19
7 W43S27
(581",-385") 		W38-W47
(9) 		0.1 -0.8 -1.6e19
8 W42S21
(602",-290") 		W42-W44
(2) 		0.1 2.9 5.5e19

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 26-Apr-2024 23:30 UT .