26 January 2017
⇐20170125 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170127⇒

NOAA
4 Active Regions
12627
12628
12629
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 W23S13
(378",-129") 		W07-W39
(32) 		4.2 1.6 1.8e33
2 E57S32
(-697",-463") 		E64-E54
(10) 		2.9 -1.1 -3.6e33
3 E19N58
(-162",874") 		E44-W01
(45) 		1.3 0.8 1.7e33
4 E56S07
(-805",-63") 		E66-E46
(20) 		0.9 -0.7 -5.5e32
5 W04S78
(13",-928") 		E39-W62
(101) 		0.7 -1.4 -3.0e33
6 E67S72
(-273",-912") 		E85-E43
(42) 		0.2 -1.1 -1.5e33

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 26-Jan-2017 20:30 UT .