8 February 2013
⇐20130207 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130209⇒

NOAA
4 Active Regions
11665
11667
11669
11670

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W22S40
(284",-547") 		E05-W40
(45) 		2.4 2.5 2.5e33
2 E11S74
(-48",-902") 		E56-W64
(120) 		1.4 0.9 2.7e33
3 E35S49
(-372",-667") 		E36-E23
(13) 		0.6 2.0 8.6e32
4 W61N30
(735",536") 		W56-W70
(14) 		0.1 -2.6 -5.7e32

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 8-Feb-2013 22:00 UT .