24 January 2023
⇐20230123 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230125⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W44S07
(669",-46") 		W32-W56
(24) 		2.1 1.7 7.4e20
2 W44S74
(187",-914") 		E42-W67
(109) 		0.7 -0.5 -2.1e20
3 E60S13
(-823",-180") 		E65-E46
(19) 		0.6 -1.2 -2.4e20
4 W09N14
(141",328") 		W04-W15
(11) 		0.6 3.7 3.7e20
5 E50S05
(-743",-32") 		E52-E48
(4) 		0.0 -0.5 -5.4e18
6 W17S44
(207",-609") 		W16-W18
(2) 		0.0 -1.0 -8.8e18
7 E10S11
(-171",-92") 		E12-E09
(3) 		0.0 -1.8 -1.2e19
8 W11S68
(66",-870") 		W06-W14
(8) 		0.0 -0.7 -1.0e19

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 24-Jan-2023 20:30 UT .