19 September 2012
⇐20120918 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120920⇒

NOAA
6 Active Regions
11569
11571
11573
11574
11575
11576

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W14N07
(233",6") 		E04-W25
(29) 		2.2 -1.7 -7.6e32
2 W40N42
(458",562") 		W28-W46
(18) 		1.5 -0.2 -1.8e32
3 W25N65
(175",813") 		W01-W38
(37) 		1.0 -0.6 -6.4e32
4 W31N18
(467",203") 		W27-W34
(7) 		0.2 -3.8 -2.8e32
5 E28N19
(-418",212") 		E29-E25
(4) 		0.0 -9.2 -1.3e32

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 19-Sep-2012 21:00 UT .