28 September 2022
⇐20220927 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20220929⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22N12
(-356",93") 		E44-W06
(50) 		6.2 2.2 2.2e21
2 W10N30
(150",381") 		E16-W21
(37) 		3.9 1.4 9.2e20
3 E27N64
(-190",813") 		E42-W33
(75) 		2.3 0.6 4.1e20
4 W37N09
(576",64") 		W33-W41
(8) 		0.1 -0.7 -1.5e19
5 W29N41
(356",549") 		W27-W32
(5) 		0.1 -1.9 -2.1e19
6 E36N03
(-559",-40") 		E38-E33
(5) 		0.0 -0.6 -4.5e18
7 E25N26
(-366",318") 		E27-E23
(4) 		0.0 4.1 3.0e19

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 28-Sep-2022 23:30 UT .