5 September 2021
⇐20210904 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210906⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W11N66
(75",816") 		E76-W42
(118) 		4.5 1.0 1.4e21
2 E16S47
(-179",-773") 		E33-W09
(42) 		2.6 -1.2 -8.7e20
3 E12S03
(-198",-172") 		E20-W01
(21) 		1.5 0.0 8.1e18
4 W25S06
(399",-202") 		W22-W28
(6) 		0.1 -2.0 -5.1e19
5 W45S05
(667",-162") 		W42-W47
(5) 		0.1 -0.8 -1.2e19
6 E46N23
(-627",295") 		E48-E44
(4) 		0.1 7.0 9.8e19
7 W36S40
(433",-678") 		W31-W42
(11) 		0.1 -0.6 -1.0e19
8 E26N00
(-420",-106") 		E28-E24
(4) 		0.0 1.9 1.2e19

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 5-Sep-2021 23:30 UT .