4 February 2014
⇐20140203 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20140205⇒

NOAA
4 Active Regions
11967
11968
11969
11970

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E26N40
(-321",697") 		E64-W35
(99) 		8.3 -2.2 -1.3e34
2 E50S59
(-384",-797") 		E72-E05
(67) 		1.9 -0.5 -1.6e33
3 E06S37
(-85",-501") 		E10-E01
(9) 		0.3 -2.7 -2.5e32
4 E10S27
(-146",-339") 		E12-E07
(5) 		0.1 -15.7 -3.6e32

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-Feb-2014 20:35 UT .