11 August 2021
⇐20210810 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210812⇒

NOAA
3 Active Regions
12851
12852
12853

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 W14N66
(93",815") 		E46-W56
(102) 		4.6 1.0 1.4e21
2 W27S55
(243",-830") 		E37-W38
(75) 		1.9 -1.1 -7.7e20
3 W30N08
(477",33") 		W28-W33
(5) 		0.1 -2.2 -3.1e19
4 W15N34
(210",439") 		W14-W18
(4) 		0.0 -1.0 -7.5e18

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 11-Aug-2021 19:30 UT .