17 July 2012
⇐20120716 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120718⇒

NOAA
7 Active Regions
11519
11520
11521
11522
11523
11524
11525

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E47S27
(-621",-472") 		E61-E31
(30) 		1.6 4.5 6.2e33
2 E22S18
(-331",-354") 		E28-E14
(14) 		0.4 5.4 6.7e32
3 W04S03
(63",-119") 		E00-W06
(6) 		0.2 -1.3 -4.6e31
4 W31N26
(435",351") 		W27-W34
(7) 		0.2 -1.7 -9.5e31

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-Jul-2012 23:00 UT .