20 July 2012
⇐20120719 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120721⇒

NOAA
4 Active Regions
11523
11524
11525
11526

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E14S29
(-205",-520") 		E35-W06
(41) 		2.2 6.5 5.3e33
2 E46N50
(-437",690") 		E56-E27
(29) 		1.2 0.8 1.1e33
3 E16N50
(-163",675") 		E23-E08
(15) 		0.6 0.9 2.7e32

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 20-Jul-2012 23:00 UT .