4 October 2013
⇐20131003 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20131005⇒

NOAA
6 Active Regions
11855
11856
11857
11858
11851
11854

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W21N62
(163",793") 		E30-W43
(73) 		3.6 0.2 7.6e32
2 E43N21
(-610",273") 		E74-E17
(57) 		2.6 -2.7 -3.6e33
3 E14S26
(-210",-510") 		E21-E06
(15) 		0.5 5.9 1.1e33

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 4-Oct-2013 23:35 UT .