7 February 2017
⇐20170206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170208⇒

NOAA
3 Active Regions
12634
12630
12632

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 W17S69
(102",-866") 		E73-W80
(153) 		3.8 -1.3 -7.6e33
2 W24S06
(388",-7") 		W01-W40
(39) 		3.5 0.8 6.8e32
3 E33N35
(-432",626") 		E63-E11
(52) 		1.4 1.0 1.0e33
4 W07N07
(121",224") 		W06-W08
(2) 		0.0 -1.3 -1.2e31

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 7-Feb-2017 20:30 UT .