17 January 2017
⇐20170116 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170118⇒

NOAA
2 Active Regions
12625
12626

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 W01S16
(21",-190") 		E35-W26
(61) 		7.7 1.5 2.2e33
2 W23N52
(233",811") 		E47-W35
(82) 		4.4 0.6 2.9e33
3 W64S71
(286",-907") 		W55-W66
(11) 		0.0 -2.2 -5.1e32

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 17-Jan-2017 20:30 UT .