22 November 2021
⇐20211121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211123⇒

NOAA
2 Active Regions
12896
12897

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 E06S08
(-97",-162") 		E31-W27
(58) 		3.6 -0.8 -4.5e20
2 E23N62
(-178",848") 		E79-W20
(99) 		2.9 0.8 7.3e20
3 W30S66
(201",-898") 		E06-W47
(53) 		0.9 -0.8 -3.8e20
4 W49S25
(669",-436") 		W38-W54
(16) 		0.7 -2.6 -4.6e20
5 W42S32
(553",-540") 		W33-W56
(23) 		0.3 -2.7 -1.9e20
6 E18S09
(-293",-185") 		E19-E16
(3) 		0.1 -1.5 -1.4e19

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 22-Nov-2021 20:30 UT .