20 June 2021
⇐20210619 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210621⇒

NOAA
2 Active Regions
12833
12834

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 E08N65
(-57",848") 		E73-W62
(135) 		3.0 0.7 7.3e20
2 E27S08
(-430",-163") 		E45-E14
(31) 		2.1 -0.1 -4.1e19
3 E00S09
(-5",-174") 		E16-W19
(35) 		1.9 -0.1 -4.2e19
4 W24N38
(310",559") 		W18-W33
(15) 		0.5 1.5 1.4e20

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 20-Jun-2021 23:30 UT .