9 August 2021
⇐20210808 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210810⇒

NOAA
2 Active Regions
12851
12852

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 E10N62
(-78",783") 		E58-W88
(146) 		5.6 0.8 1.2e21
2 W25N16
(381",161") 		W01-W42
(41) 		3.3 -0.0 -1.1e19
3 E09S56
(-80",-837") 		E23-W41
(64) 		1.7 -0.8 -4.5e20
4 W16S41
(197",-696") 		W07-W21
(14) 		0.6 -1.1 -1.7e20
5 E35S61
(-263",-867") 		E50-E26
(24) 		0.1 -1.4 -1.1e20
6 W24S35
(313",-620") 		W21-W28
(7) 		0.1 -2.7 -3.7e19
7 E19N05
(-312",-25") 		5
(7.8e02) 		-2.1 3.3 2.6e19

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 9-Aug-2021 23:30 UT .