7 April 2012
⇐20120406 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120408⇒

NOAA
2 Active Regions
11450
11452

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E37S17
(-551",-193") 		E50-E22
(28) 		4.4 -2.8 -4.9e33
2 W42S72
(200",-882") 		E26-W49
(75) 		1.1 1.0 2.9e33
3 E34N47
(-370",755") 		E41-E25
(16) 		0.6 -0.9 -6.9e32

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 7-Apr-2012 23:00 UT .