3 September 2020
⇐20200902 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200904⇒

NOAA
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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 E20S17
(-316",-390") 		E41-W19
(60) 		5.6 -0.1 -1.2e20
2 W01N04
(12",-53") 		E15-W14
(29) 		1.5 0.3 5.8e19
3 E10S58
(-85",-863") 		E30-W11
(41) 		1.3 -0.5 -2.2e20
4 E35N13
(-538",120") 		E40-E30
(10) 		0.4 0.9 6.3e19
5 E29S28
(-412",-538") 		E35-E24
(11) 		0.2 -0.8 -4.2e19

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 3-Sep-2020 19:00 UT .