26 August 2021
⇐20210825 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210827⇒

NOAA
2 Active Regions
12859
12860

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 E10N65
(-70",804") 		E89-W77
(166) 		4.5 1.1 1.4e21
2 E06S01
(-97",-129") 		E21-W15
(36) 		2.2 0.0 2.6e18
3 W44N15
(634",166") 		W41-W46
(5) 		0.1 -1.8 -4.3e19

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 26-Aug-2021 23:30 UT .