19 April 2015
⇐20150418 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150420⇒

NOAA
7 Active Regions
12321
12322
12324
12325
12326
12327
12328

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W14S19
(221",-230") 		W03-W23
(20) 		1.9 7.0 3.0e33
2 W62S68
(309",-870") 		E35-W73
(108) 		1.2 -0.4 -2.4e33

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-Apr-2015 23:35 UT .