2 February 2012
⇐20120201 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120203⇒

NOAA
4 Active Regions
11408
11410
11411
11413

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W10S19
(156",-225") 		E04-W16
(20) 		1.1 -1.9 -4.5e32
2 W23N12
(378",295") 		W19-W32
(13) 		0.7 -13.9 -2.9e33
3 W50S72
(229",-902") 		W26-W86
(60) 		0.4 0.5 8.1e32

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 2-Feb-2012 22:00 UT .