28 January 2017
⇐20170127 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170129⇒

NOAA
3 Active Regions
12628
12629
12627

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 E38S46
(-416",-647") 		E81-W79
(160) 		14.4 -1.3 -1.3e34
2 W12N62
(96",900") 		E25-W56
(81) 		1.8 0.8 3.0e33
3 W54S15
(764",-197") 		W41-W66
(25) 		0.9 1.0 7.2e32

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 28-Jan-2017 20:30 UT .