19 July 2012
⇐20120718 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120720⇒

NOAA
4 Active Regions
11520
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 E24S29
(-344",-514") 		E36-E07
(29) 		2.4 6.8 7.1e33
2 E49N51
(-449",697") 		E65-E17
(48) 		1.2 0.6 9.7e32
3 W20S01
(322",-95") 		W17-W24
(7) 		0.4 -1.1 -1.0e32
4 E29N22
(-423",282") 		E31-E26
(5) 		0.1 -2.9 -6.6e31

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-Jul-2012 23:00 UT .