26 April 2012
⇐20120425 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120427⇒

NOAA
7 Active Regions
11459
11460
11465
11466
11467
11468
11469

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E22N30
(-308",540") 		E44-E06
(38) 		1.4 2.0 1.2e33
2 E23S78
(-76",-916") 		E76-W69
(145) 		0.5 0.8 1.7e33

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-Apr-2012 23:00 UT .