13 March 2017
⇐20170312 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170314⇒

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 W22N51
(232",814") 		E60-W45
(105) 		4.3 0.4 2.3e33
2 W48S72
(222",-885") 		E50-W65
(115) 		1.6 -1.4 -6.5e33
3 W20S35
(271",-461") 		W18-W22
(4) 		0.0 -0.8 -9.3e30

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 13-Mar-2017 20:30 UT .