25 January 2017
⇐20170124 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170126⇒

NOAA
4 Active Regions
12626
12627
12628
12629

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 W14S12
(227",-115") 		E08-W26
(34) 		4.7 1.1 1.1e33
2 E29N56
(-262",848") 		E41-E13
(28) 		1.2 0.6 1.2e33
3 E70S30
(-794",-458") 		E73-E73
(2.7e05) 		-0.9 5.4 1.4e34
4 E26S78
(-84",-934") 		E81-W73
(154) 		0.5 -1.3 -2.9e33
5 E67S08
(-891",-106") 		E75-E62
(13) 		0.1 -1.6 -3.9e32

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 25-Jan-2017 20:30 UT .