25 March 2018
⇐20180324 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180326⇒

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 E23N37
(-300",666") 		E57-W04
(61) 		6.0 0.6 2.2e33
2 E02S70
(-11",-859") 		E70-W67
(137) 		3.6 -1.3 -6.8e33
3 W48S48
(484",-657") 		W32-W67
(35) 		0.7 -0.7 -4.8e32
4 W58N01
(815",75") 		W50-W65
(15) 		0.4 -1.4 -5.4e32
5 W31N68
(186",923") 		W20-W49
(29) 		0.1 1.6 1.0e33

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 25-Mar-2018 23:30 UT .