4 October 2017
20171003 Week Rotation Today Rotation Week 20171005

NOAA
2 Active Regions

Flare Forecast

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W25S23
(381",-463")
W15-W33
(18)
1.6 -2.1 -1.4e33
2 E56N31
(-682",432")
E72-E41
(31)
1.0 2.9 2.9e33
3 W21S70
(118",-931")
54
(1.8e05)
-0.3 14.5 2.7e34

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/solarmonitor/solarmonitoridl/idl. 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. The region positions are valid on 4-Oct-2017 23:30 UT .