15 April 2015
⇐20150414 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150416⇒

NOAA
7 Active Regions
12320
12321
12322
12323
12324
12325
12318

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W34S55
(306",-739") 		E64-W60
(124) 		6.7 -1.9 -1.2e34
2 E42S22
(-594",-286") 		E55-E24
(31) 		1.5 4.2 3.1e33
3 E11S39
(-146",-532") 		E17-E01
(16) 		0.3 -0.8 -7.2e31

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 15-Apr-2015 23:35 UT .