3 February 2012
⇐20120202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120204⇒

NOAA
3 Active Regions
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 W21S20
(324",-239") 		W11-W29
(18) 		0.9 -3.1 -7.3e32
2 E54S29
(-690",-424") 		E60-E50
(10) 		0.5 4.3 2.0e33
3 W41N12
(628",277") 		W34-W53
(19) 		0.5 -7.9 -2.0e33

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 3-Feb-2012 22:00 UT .