18 February 2013
⇐20130217 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130219⇒

NOAA
6 Active Regions
11671
11673
11675
11676
11677
11678

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S45
(294",-610") 		E10-W32
(42) 		1.6 -3.7 -3.1e33
2 E51S49
(-496",-680") 		E79-E14
(65) 		1.1 -2.2 -2.7e33
3 E20N29
(-288",568") 		E24-E15
(9) 		0.4 -4.9 -9.4e32
4 W29S11
(470",-87") 		W26-W34
(8) 		0.1 -1.8 -7.5e31
5 E16N41
(-205",723") 		E18-E14
(4) 		0.1 -0.6 -4.3e31
6 W35S28
(498",-369") 		W34-W38
(4) 		0.1 -5.6 -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 18-Feb-2013 22:00 UT .