19 January 2017
⇐20170118 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170120⇒

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 W32S22
(478",-296") 		E07-W51
(58) 		4.6 1.5 2.5e33
2 W41N60
(325",871") 		W15-W57
(42) 		1.1 0.9 3.2e33
3 E42N49
(-429",777") 		E56-E37
(19) 		0.9 0.5 6.7e32
4 E00N72
(-2",948") 		E17-W20
(37) 		0.2 0.4 4.8e32
5 E27S22
(-412",-295") 		E29-E24
(5) 		0.1 3.5 7.0e31

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 19-Jan-2017 20:30 UT .