22 January 2024
⇐20240121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240123⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E50S18
(-715",-240") 		E67-E34
(33) 		1.4 -3.3 -1.1e21
2 E50N37
(-595",636") 		E64-E27
(37) 		1.4 -2.5 -1.1e21
3 E31S60
(-249",-804") 		E48-E10
(38) 		0.4 0.4 5.7e19
4 W14S49
(152",-684") 		W06-W20
(14) 		0.3 -1.6 -1.2e20
5 W04S59
(36",-790") 		E10-W14
(24) 		0.3 0.9 6.1e19
6 W08N06
(128",198") 		W03-W13
(10) 		0.2 -1.4 -5.4e19
7 W27S49
(294",-684") 		W22-W31
(9) 		0.2 -1.0 -4.7e19
8 W25N03
(418",126") 		W22-W28
(6) 		0.2 -4.3 -1.4e20
9 W18S72
(93",-900") 		E10-W33
(43) 		0.2 -0.8 -5.6e19
10 E14N59
(-118",877") 		E23-E06
(17) 		0.2 -1.2 -7.4e19
11 E40S74
(-171",-917") 		E81-E13
(68) 		0.1 -0.3 -2.5e19
12 W20S46
(231",-636") 		W17-W22
(5) 		0.0 -5.0 -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 22-Jan-2024 20:30 UT .