18 March 2012
⇐20120317 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120319⇒

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 W59S06
(824",-36") 		W50-W71
(21) 		1.3 -1.2 -1.7e33
2 E32S27
(-463",-338") 		E36-E24
(12) 		1.1 6.9 2.8e33
3 W63S39
(670",-562") 		W48-W69
(21) 		0.2 -1.0 -3.5e32

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 18-Mar-2012 22:00 UT .