18 July 2012
⇐20120717 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120719⇒

NOAA
6 Active Regions
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 E35S26
(-488",-474") 		E49-E18
(31) 		1.9 7.0 7.4e33
2 E56N51
(-489",707") 		E76-E36
(40) 		0.7 0.6 6.9e32
3 E08S17
(-129",-346") 		E13-E03
(10) 		0.2 5.2 2.2e32

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-Jul-2012 23:00 UT .