8 December 2021
⇐20211207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211209⇒

NOAA
3 Active Regions
12904
12901
12903

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E34S03
(-546",-42") 		E54-E07
(47) 		2.4 -0.1 -5.7e19
2 E28N65
(-193",887") 		E43-W27
(70) 		1.2 1.0 5.4e20
3 W09S35
(127",-559") 		W01-W16
(15) 		0.6 -1.5 -1.9e20
4 W18S72
(94",-925") 		E42-W45
(87) 		0.6 -0.7 -2.0e20
5 W25S28
(367",-459") 		W17-W31
(14) 		0.4 -0.7 -5.2e19
6 W25S54
(240",-789") 		W21-W28
(7) 		0.2 -0.7 -4.7e19
7 W28S04
(462",-59") 		W25-W32
(7) 		0.1 -0.7 -1.3e19
8 E35S11
(-553",-191") 		E37-E33
(4) 		0.1 -2.1 -2.1e19

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 8-Dec-2021 20:30 UT .