30 August 2021
⇐20210829 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210831⇒

NOAA
3 Active Regions
12859
12860
12861

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 E07S10
(-112",-282") 		E47-W31
(78) 		8.1 -0.4 -5.4e20
2 W29N69
(164",846") 		E86-W52
(138) 		3.2 0.7 8.9e20
3 E56N60
(-390",789") 		E70-E38
(32) 		0.5 0.4 8.5e19
4 E42N44
(-465",587") 		E48-E38
(10) 		0.1 0.5 1.1e19
5 W46S04
(686",-152") 		W44-W49
(5) 		0.0 -0.5 -5.1e18

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 30-Aug-2021 23:30 UT .