4 September 2019
⇐20190903 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190905⇒

NOAA
1 Active Region
12748

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 W14S26
(210",-525") 		E15-W32
(47) 		6.0 -0.7 -7.3e20
2 E23N12
(-358",93") 		E44-W10
(54) 		4.5 0.1 5.3e19
3 W01N71
(6",851") 		E61-W76
(137) 		3.7 1.4 1.8e21
4 E06N27
(-84",317") 		E08-E00
(8) 		0.2 -0.9 -2.7e19
5 W67N60
(436",796") 		W65-W66
(1) 		0.1 1.2 6.6e19
6 E45S04
(-672",-152") 		E47-E42
(5) 		0.1 1.7 2.0e19

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 4-Sep-2019 23:40 UT .