25 January 2023
⇐20230124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20230126⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E46S14
(-683",-175") 		E55-E31
(24) 		1.2 -2.9 -7.5e20
2 W57S07
(816",-76") 		W47-W69
(22) 		1.1 1.7 5.3e20
3 W16S14
(253",-147") 		W05-W22
(17) 		0.7 -0.9 -1.0e20
4 E62S63
(-388",-846") 		E60-E48
(12) 		0.4 -0.3 -5.2e19
5 W24N14
(384",317") 		W19-W28
(9) 		0.3 1.3 6.1e19
6 W59S74
(232",-919") 		W32-W66
(34) 		0.2 -0.7 -1.1e20
7 E41S03
(-642",26") 		6
(1.2e03) 		-1.0 3.1 3.7e19
8 W34S04
(551",6") 		W32-W37
(5) 		0.1 -2.2 -2.1e19
9 E25N03
(-409",144") 		E27-E22
(5) 		0.0 -1.2 -9.7e18
10 W28S03
(461",36") 		W27-W30
(3) 		0.0 -3.4 -2.5e19

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 25-Jan-2023 20:30 UT .