17 February 2015
⇐20150216 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20150218⇒

NOAA
4 Active Regions
12282
12284
12285
12283

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02N41
(24",727") 		E26-W21
(47) 		5.0 2.0 6.2e33
2 E21S62
(-161",-804") 		E87-W19
(106) 		3.8 -1.1 -4.2e33
3 E20S45
(-234",-603") 		E24-E15
(9) 		0.2 -1.6 -1.5e32

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 17-Feb-2015 22:35 UT .