17 March 2012
⇐20120316 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120318⇒

NOAA
6 Active Regions
11432
11433
11434
11435
11436
11437

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W45S06
(679",-12") 		W35-W56
(21) 		3.2 -1.7 -2.8e33
2 W41S39
(489",-538") 		W19-W63
(44) 		1.6 -1.4 -1.4e33
3 E46S30
(-606",-407") 		E53-E38
(15) 		0.6 7.8 2.9e33

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 17-Mar-2012 22:00 UT .