6 May 2025
⇐20250505 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20250507⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W03S37
(41",-527") 		E32-W35
(67) 		7.5 -3.3 -4.6e21
2 W18N53
(177",791") 		E01-W29
(30) 		1.5 -0.1 -5.2e19
3 E21N16
(-336",309") 		E29-E14
(15) 		0.5 1.7 1.5e20
4 E47N34
(-577",563") 		E64-E35
(29) 		0.2 2.4 1.4e20
5 W49N34
(591",568") 		W46-W56
(10) 		0.1 -2.2 -5.0e19
6 W50N47
(495",723") 		W48-W54
(6) 		0.1 -1.3 -2.6e19
7 E05N54
(-48",803") 		E09-W02
(11) 		0.0 -0.6 -7.8e18
8 W42N43
(465",682") 		W38-W45
(7) 		0.0 2.2 2.8e19

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 6-May-2025 23:30 UT .