22 January 2017
⇐20170121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170123⇒

NOAA
4 Active Regions
12625
12626
12627
12628

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 E35S10
(-547",-102") 		E52-E15
(37) 		2.9 0.9 9.6e32
2 W48S26
(649",-369") 		W32-W70
(38) 		1.4 1.5 1.3e33
3 E06S26
(-93",-350") 		E08-E04
(4) 		0.0 -0.9 -7.8e30

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 22-Jan-2017 10:30 UT .