6 December 2021
⇐20211205 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211207⇒

NOAA
4 Active Regions
12902
12903
12904
12901

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 W13N06
(211",103") 		W01-W19
(18) 		1.5 -0.1 -3.0e19
2 W02S31
(33",-500") 		E12-W15
(27) 		1.4 -0.2 -5.7e19
3 E33S68
(-199",-902") 		E68-W27
(95) 		0.9 -0.7 -2.8e20
4 W20N24
(301",399") 		W10-W24
(14) 		0.6 -3.3 -3.6e20
5 E20S35
(-278",-566") 		E28-E12
(16) 		0.4 -1.3 -1.0e20
6 E51N62
(-358",857") 		E58-E35
(23) 		0.4 0.7 1.3e20
7 W06S16
(104",-279") 		W04-W10
(6) 		0.1 -4.6 -8.7e19
8 W02N11
(36",190") 		W00-W04
(4) 		0.0 -1.6 -1.1e19

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 6-Dec-2021 20:30 UT .